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Cache Service

cache

Caching system for Weeb CLI.

This module provides a two-tier caching system with both memory and file-based storage. Supports TTL (time-to-live) for automatic cache expiration.

The cache system is used throughout the application to reduce redundant API calls and improve performance.

Classes:

Name Description
CacheManager

Main cache manager with memory and file storage

Functions:

Name Description
cached

Decorator for automatic function result caching
get_cache

Get global cache instance
Example

Using cache manager::

from weeb_cli.services.cache import get_cache

cache = get_cache()

# Store value
cache.set("search:animecix:naruto", results)

# Retrieve value (max 1 hour old)
results = cache.get("search:animecix:naruto", max_age=3600)

# Clear specific pattern
cache.clear_pattern("search:animecix:")

Using decorator::

from weeb_cli.services.cache import cached

@cached(max_age=1800)  # 30 minutes
def expensive_operation(param):
    # This result will be cached
    return compute_result(param)

CacheManager

Two-tier cache manager with memory and file storage.

Provides fast memory cache with persistent file backup. Automatically handles cache expiration based on TTL (time-to-live).

Attributes:

Name Type Description
cache_dir Path

Directory for cache file storage.
_memory_cache Dict[str, Tuple[Any, float]]

In-memory cache dictionary.
Source code in weeb_cli/services/cache.py 
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class CacheManager:
    """Two-tier cache manager with memory and file storage.

    Provides fast memory cache with persistent file backup. Automatically
    handles cache expiration based on TTL (time-to-live).

    Attributes:
        cache_dir: Directory for cache file storage.
        _memory_cache: In-memory cache dictionary.
    """

    def __init__(self, cache_dir: Path) -> None:
        """Initialize cache manager.

        Args:
            cache_dir: Directory path for storing cache files.
        """
        self.cache_dir: Path = cache_dir
        self.cache_dir.mkdir(parents=True, exist_ok=True)
        self._memory_cache: Dict[str, Tuple[Any, float]] = {}

    def _get_cache_key(self, key: str) -> str:
        """Generate SHA256 hash for cache key.

        Args:
            key: Original cache key.

        Returns:
            Hexadecimal hash string.
        """
        return hashlib.sha256(key.encode()).hexdigest()

    def get(self, key: str, max_age: int = 3600) -> Optional[Any]:
        """Retrieve cached value if not expired.

        Checks memory cache first, then file cache. Automatically removes
        expired entries.

        Args:
            key: Cache key.
            max_age: Maximum age in seconds (default: 1 hour).

        Returns:
            Cached value if found and not expired, otherwise None.

        Example:
            >>> cache.get("search:naruto", max_age=1800)
            [{'id': '1', 'title': 'Naruto'}]
        """
        # Check memory cache
        if key in self._memory_cache:
            value, timestamp = self._memory_cache[key]
            if time.time() - timestamp < max_age:
                return value
            else:
                del self._memory_cache[key]

        # Check file cache
        cache_key = self._get_cache_key(key)
        cache_file = self.cache_dir / f"{cache_key}.cache"

        if cache_file.exists():
            age = time.time() - cache_file.stat().st_mtime
            if age < max_age:
                try:
                    with open(cache_file, 'r', encoding='utf-8') as f:
                        value = json.load(f)
                        self._memory_cache[key] = (value, time.time())
                        return value
                except (json.JSONDecodeError, UnicodeDecodeError, OSError):
                    pass
                # Fallback: try reading as pickle for backward compatibility
                try:
                    with open(cache_file, 'rb') as f:
                        value = pickle.load(f)
                        self._memory_cache[key] = (value, time.time())
                        return value
                except (pickle.PickleError, EOFError, OSError):
                    cache_file.unlink(missing_ok=True)

        return None

    def set(self, key: str, value: Any) -> None:
        """Store value in cache.

        Stores in both memory and file cache for persistence.

        Args:
            key: Cache key.
            value: Value to cache (must be JSON-serializable).

        Example:
            >>> cache.set("search:naruto", results)
        """
        self._memory_cache[key] = (value, time.time())

        cache_key = self._get_cache_key(key)
        cache_file = self.cache_dir / f"{cache_key}.cache"

        try:
            with open(cache_file, 'w', encoding='utf-8') as f:
                json.dump(value, f, ensure_ascii=False, default=str)
        except (OSError, TypeError):
            pass

    def delete(self, key: str) -> None:
        """Delete cached value.

        Removes from both memory and file cache.

        Args:
            key: Cache key to delete.
        """
        self._memory_cache.pop(key, None)

        cache_key = self._get_cache_key(key)
        cache_file = self.cache_dir / f"{cache_key}.cache"
        cache_file.unlink(missing_ok=True)

    def clear(self) -> None:
        """Clear all cached values.

        Removes all entries from memory and deletes all cache files.
        """
        self._memory_cache.clear()

        for cache_file in self.cache_dir.glob("*.cache"):
            cache_file.unlink(missing_ok=True)

    def clear_pattern(self, pattern: str) -> int:
        """Clear cached values matching a pattern.

        Args:
            pattern: String pattern to match in cache keys.

        Returns:
            Number of entries removed.

        Example:
            >>> count = cache.clear_pattern("search:animecix:")
            >>> print(f"Removed {count} entries")
        """
        removed = 0
        keys_to_remove = [k for k in self._memory_cache.keys() if pattern in k]
        for key in keys_to_remove:
            del self._memory_cache[key]
            cache_key = self._get_cache_key(key)
            cache_file = self.cache_dir / f"{cache_key}.cache"
            cache_file.unlink(missing_ok=True)
            removed += 1

        return removed

    def invalidate_provider(self, provider_name: str) -> int:
        """Invalidate all cache entries for a provider.

        Clears search and details cache for the specified provider.

        Args:
            provider_name: Provider identifier.

        Returns:
            Number of entries removed.

        Example:
            >>> cache.invalidate_provider("animecix")
        """
        removed = 0
        patterns = [f"search:{provider_name}:", f"details:{provider_name}:"]

        for pattern in patterns:
            keys_to_remove = [k for k in list(self._memory_cache.keys()) if k.startswith(pattern)]
            for key in keys_to_remove:
                del self._memory_cache[key]
                removed += 1

        # Clear all file cache (conservative approach)
        for cache_file in self.cache_dir.glob("*.cache"):
            cache_file.unlink(missing_ok=True)

        return removed

    def cleanup(self, max_age: int = 86400) -> int:
        """Remove expired cache entries.

        Removes entries older than max_age from both memory and file cache.

        Args:
            max_age: Maximum age in seconds (default: 24 hours).

        Returns:
            Number of entries removed.

        Example:
            >>> # Remove entries older than 1 hour
            >>> count = cache.cleanup(max_age=3600)
        """
        removed = 0
        cutoff = time.time() - max_age

        # Clean memory cache
        keys_to_remove = []
        for key, (value, timestamp) in list(self._memory_cache.items()):
            if timestamp < cutoff:
                keys_to_remove.append(key)

        for key in keys_to_remove:
            del self._memory_cache[key]
            removed += 1

        # Clean file cache
        for cache_file in self.cache_dir.glob("*.cache"):
            if cache_file.stat().st_mtime < cutoff:
                cache_file.unlink(missing_ok=True)
                removed += 1

        return removed

    def get_stats(self) -> Dict[str, Any]:
        """Get cache statistics.

        Returns:
            Dictionary with cache statistics:
                - memory_entries: Number of in-memory entries
                - file_entries: Number of file cache entries
                - total_size_bytes: Total file cache size in bytes
                - total_size_mb: Total file cache size in MB

        Example:
            >>> stats = cache.get_stats()
            >>> print(f"Cache size: {stats['total_size_mb']} MB")
        """
        memory_count = len(self._memory_cache)
        file_count = len(list(self.cache_dir.glob("*.cache")))

        total_size = 0
        for cache_file in self.cache_dir.glob("*.cache"):
            total_size += cache_file.stat().st_size

        return {
            "memory_entries": memory_count,
            "file_entries": file_count,
            "total_size_bytes": total_size,
            "total_size_mb": round(total_size / (1024 * 1024), 2)
        }

__init__ 

__init__(cache_dir: Path) -> None

Initialize cache manager.

Parameters:

Name Type Description Default
cache_dir Path

Directory path for storing cache files.

 required
Source code in weeb_cli/services/cache.py 
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def __init__(self, cache_dir: Path) -> None:
    """Initialize cache manager.

    Args:
        cache_dir: Directory path for storing cache files.
    """
    self.cache_dir: Path = cache_dir
    self.cache_dir.mkdir(parents=True, exist_ok=True)
    self._memory_cache: Dict[str, Tuple[Any, float]] = {}

get 

get(key: str, max_age: int = 3600) -> Optional[Any]

Retrieve cached value if not expired.

Checks memory cache first, then file cache. Automatically removes expired entries.

Parameters:

Name Type Description Default
key str

Cache key.

 required
max_age int

Maximum age in seconds (default: 1 hour).

 3600

Returns:

Type Description
Optional[Any]

Cached value if found and not expired, otherwise None.
Example

cache.get("search:naruto", max_age=1800) [{'id': '1', 'title': 'Naruto'}]

Source code in weeb_cli/services/cache.py 
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def get(self, key: str, max_age: int = 3600) -> Optional[Any]:
    """Retrieve cached value if not expired.

    Checks memory cache first, then file cache. Automatically removes
    expired entries.

    Args:
        key: Cache key.
        max_age: Maximum age in seconds (default: 1 hour).

    Returns:
        Cached value if found and not expired, otherwise None.

    Example:
        >>> cache.get("search:naruto", max_age=1800)
        [{'id': '1', 'title': 'Naruto'}]
    """
    # Check memory cache
    if key in self._memory_cache:
        value, timestamp = self._memory_cache[key]
        if time.time() - timestamp < max_age:
            return value
        else:
            del self._memory_cache[key]

    # Check file cache
    cache_key = self._get_cache_key(key)
    cache_file = self.cache_dir / f"{cache_key}.cache"

    if cache_file.exists():
        age = time.time() - cache_file.stat().st_mtime
        if age < max_age:
            try:
                with open(cache_file, 'r', encoding='utf-8') as f:
                    value = json.load(f)
                    self._memory_cache[key] = (value, time.time())
                    return value
            except (json.JSONDecodeError, UnicodeDecodeError, OSError):
                pass
            # Fallback: try reading as pickle for backward compatibility
            try:
                with open(cache_file, 'rb') as f:
                    value = pickle.load(f)
                    self._memory_cache[key] = (value, time.time())
                    return value
            except (pickle.PickleError, EOFError, OSError):
                cache_file.unlink(missing_ok=True)

    return None

set 

set(key: str, value: Any) -> None

Store value in cache.

Stores in both memory and file cache for persistence.

Parameters:

Name Type Description Default
key str

Cache key.

 required
value Any

Value to cache (must be JSON-serializable).

 required
Example

cache.set("search:naruto", results)

Source code in weeb_cli/services/cache.py 
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def set(self, key: str, value: Any) -> None:
    """Store value in cache.

    Stores in both memory and file cache for persistence.

    Args:
        key: Cache key.
        value: Value to cache (must be JSON-serializable).

    Example:
        >>> cache.set("search:naruto", results)
    """
    self._memory_cache[key] = (value, time.time())

    cache_key = self._get_cache_key(key)
    cache_file = self.cache_dir / f"{cache_key}.cache"

    try:
        with open(cache_file, 'w', encoding='utf-8') as f:
            json.dump(value, f, ensure_ascii=False, default=str)
    except (OSError, TypeError):
        pass

delete 

delete(key: str) -> None

Delete cached value.

Removes from both memory and file cache.

Parameters:

Name Type Description Default
key str

Cache key to delete.

 required
Source code in weeb_cli/services/cache.py 
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def delete(self, key: str) -> None:
    """Delete cached value.

    Removes from both memory and file cache.

    Args:
        key: Cache key to delete.
    """
    self._memory_cache.pop(key, None)

    cache_key = self._get_cache_key(key)
    cache_file = self.cache_dir / f"{cache_key}.cache"
    cache_file.unlink(missing_ok=True)

clear 

clear() -> None

Clear all cached values.

Removes all entries from memory and deletes all cache files.

Source code in weeb_cli/services/cache.py 
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def clear(self) -> None:
    """Clear all cached values.

    Removes all entries from memory and deletes all cache files.
    """
    self._memory_cache.clear()

    for cache_file in self.cache_dir.glob("*.cache"):
        cache_file.unlink(missing_ok=True)

clear_pattern 

clear_pattern(pattern: str) -> int

Clear cached values matching a pattern.

Parameters:

Name Type Description Default
pattern str

String pattern to match in cache keys.

 required

Returns:

Type Description
int

Number of entries removed.
Example

count = cache.clear_pattern("search:animecix:") print(f"Removed {count} entries")

Source code in weeb_cli/services/cache.py 
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def clear_pattern(self, pattern: str) -> int:
    """Clear cached values matching a pattern.

    Args:
        pattern: String pattern to match in cache keys.

    Returns:
        Number of entries removed.

    Example:
        >>> count = cache.clear_pattern("search:animecix:")
        >>> print(f"Removed {count} entries")
    """
    removed = 0
    keys_to_remove = [k for k in self._memory_cache.keys() if pattern in k]
    for key in keys_to_remove:
        del self._memory_cache[key]
        cache_key = self._get_cache_key(key)
        cache_file = self.cache_dir / f"{cache_key}.cache"
        cache_file.unlink(missing_ok=True)
        removed += 1

    return removed

invalidate_provider 

invalidate_provider(provider_name: str) -> int

Invalidate all cache entries for a provider.

Clears search and details cache for the specified provider.

Parameters:

Name Type Description Default
provider_name str

Provider identifier.

 required

Returns:

Type Description
int

Number of entries removed.
Example

cache.invalidate_provider("animecix")

Source code in weeb_cli/services/cache.py 
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def invalidate_provider(self, provider_name: str) -> int:
    """Invalidate all cache entries for a provider.

    Clears search and details cache for the specified provider.

    Args:
        provider_name: Provider identifier.

    Returns:
        Number of entries removed.

    Example:
        >>> cache.invalidate_provider("animecix")
    """
    removed = 0
    patterns = [f"search:{provider_name}:", f"details:{provider_name}:"]

    for pattern in patterns:
        keys_to_remove = [k for k in list(self._memory_cache.keys()) if k.startswith(pattern)]
        for key in keys_to_remove:
            del self._memory_cache[key]
            removed += 1

    # Clear all file cache (conservative approach)
    for cache_file in self.cache_dir.glob("*.cache"):
        cache_file.unlink(missing_ok=True)

    return removed

cleanup 

cleanup(max_age: int = 86400) -> int

Remove expired cache entries.

Removes entries older than max_age from both memory and file cache.

Parameters:

Name Type Description Default
max_age int

Maximum age in seconds (default: 24 hours).

 86400

Returns:

Type Description
int

Number of entries removed.
Example
Remove entries older than 1 hour

count = cache.cleanup(max_age=3600)

Source code in weeb_cli/services/cache.py 
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def cleanup(self, max_age: int = 86400) -> int:
    """Remove expired cache entries.

    Removes entries older than max_age from both memory and file cache.

    Args:
        max_age: Maximum age in seconds (default: 24 hours).

    Returns:
        Number of entries removed.

    Example:
        >>> # Remove entries older than 1 hour
        >>> count = cache.cleanup(max_age=3600)
    """
    removed = 0
    cutoff = time.time() - max_age

    # Clean memory cache
    keys_to_remove = []
    for key, (value, timestamp) in list(self._memory_cache.items()):
        if timestamp < cutoff:
            keys_to_remove.append(key)

    for key in keys_to_remove:
        del self._memory_cache[key]
        removed += 1

    # Clean file cache
    for cache_file in self.cache_dir.glob("*.cache"):
        if cache_file.stat().st_mtime < cutoff:
            cache_file.unlink(missing_ok=True)
            removed += 1

    return removed

get_stats 

get_stats() -> Dict[str, Any]

Get cache statistics.

Returns:

Type Description
Dict[str, Any]

Dictionary with cache statistics: - memory_entries: Number of in-memory entries - file_entries: Number of file cache entries - total_size_bytes: Total file cache size in bytes - total_size_mb: Total file cache size in MB
Example

stats = cache.get_stats() print(f"Cache size: {stats['total_size_mb']} MB")

Source code in weeb_cli/services/cache.py 
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def get_stats(self) -> Dict[str, Any]:
    """Get cache statistics.

    Returns:
        Dictionary with cache statistics:
            - memory_entries: Number of in-memory entries
            - file_entries: Number of file cache entries
            - total_size_bytes: Total file cache size in bytes
            - total_size_mb: Total file cache size in MB

    Example:
        >>> stats = cache.get_stats()
        >>> print(f"Cache size: {stats['total_size_mb']} MB")
    """
    memory_count = len(self._memory_cache)
    file_count = len(list(self.cache_dir.glob("*.cache")))

    total_size = 0
    for cache_file in self.cache_dir.glob("*.cache"):
        total_size += cache_file.stat().st_size

    return {
        "memory_entries": memory_count,
        "file_entries": file_count,
        "total_size_bytes": total_size,
        "total_size_mb": round(total_size / (1024 * 1024), 2)
    }

cached 

cached(max_age: int = 3600, cache_manager: Optional[CacheManager] = None)

Decorator for automatic function result caching.

Caches function results based on arguments. Cache key is generated from function name and arguments.

Parameters:

Name Type Description Default
max_age int

Cache TTL in seconds (default: 1 hour).

 3600
cache_manager Optional[CacheManager]

Optional custom cache manager instance.

 None

Returns:

Type Description

Decorator function.
Example

@cached(max_age=1800) ... def fetch_anime_details(anime_id): ... # Expensive operation ... return api.get_details(anime_id)

First call: executes function

details = fetch_anime_details("123")

Second call within 30 min: returns cached result

details = fetch_anime_details("123")

Source code in weeb_cli/services/cache.py 
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def cached(max_age: int = 3600, cache_manager: Optional[CacheManager] = None):
    """Decorator for automatic function result caching.

    Caches function results based on arguments. Cache key is generated
    from function name and arguments.

    Args:
        max_age: Cache TTL in seconds (default: 1 hour).
        cache_manager: Optional custom cache manager instance.

    Returns:
        Decorator function.

    Example:
        >>> @cached(max_age=1800)
        ... def fetch_anime_details(anime_id):
        ...     # Expensive operation
        ...     return api.get_details(anime_id)

        >>> # First call: executes function
        >>> details = fetch_anime_details("123")

        >>> # Second call within 30 min: returns cached result
        >>> details = fetch_anime_details("123")
    """
    def decorator(func: Callable) -> Callable:
        @wraps(func)
        def wrapper(*args, **kwargs):
            # Generate cache key from function name and arguments
            key_parts = [func.__name__]
            key_parts.extend(str(arg) for arg in args)
            key_parts.extend(f"{k}={v}" for k, v in sorted(kwargs.items()))
            cache_key = ":".join(key_parts)

            cm = cache_manager or _get_global_cache()

            # Try to get from cache
            result = cm.get(cache_key, max_age)
            if result is not None:
                return result

            # Execute function and cache result
            result = func(*args, **kwargs)
            cm.set(cache_key, result)
            return result

        return wrapper
    return decorator

get_cache 

get_cache() -> CacheManager

Get global cache instance.

Returns:

Type Description
CacheManager

Global CacheManager instance for application-wide use.
Example

from weeb_cli.services.cache import get_cache cache = get_cache() cache.set("key", "value")

Source code in weeb_cli/services/cache.py 
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def get_cache() -> CacheManager:
    """Get global cache instance.

    Returns:
        Global CacheManager instance for application-wide use.

    Example:
        >>> from weeb_cli.services.cache import get_cache
        >>> cache = get_cache()
        >>> cache.set("key", "value")
    """
    return _get_global_cache()

Overview

Two-tier caching system with memory and file-based storage for improved performance.

CacheManager

Main cache manager class.

Methods

  • get(): Retrieve cached value
  • set(): Store value in cache
  • delete(): Remove cached value
  • clear(): Clear all cache
  • clear_pattern(): Clear by pattern
  • invalidate_provider(): Clear provider cache
  • cleanup(): Remove expired entries
  • get_stats(): Get cache statistics

Usage Examples

Basic Caching

from weeb_cli.services.cache import get_cache

cache = get_cache()

# Store
cache.set("key", {"data": "value"})

# Retrieve
data = cache.get("key", max_age=3600)

Using Decorator

from weeb_cli.services.cache import cached

@cached(max_age=1800)
def expensive_function(param):
    # Result cached for 30 minutes
    return compute_result(param)

API Reference

CacheManager

Two-tier cache manager with memory and file storage.

Provides fast memory cache with persistent file backup. Automatically handles cache expiration based on TTL (time-to-live).

Attributes:

Name Type Description
cache_dir Path

Directory for cache file storage.
_memory_cache Dict[str, Tuple[Any, float]]

In-memory cache dictionary.
Source code in weeb_cli/services/cache.py 
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class CacheManager:
    """Two-tier cache manager with memory and file storage.

    Provides fast memory cache with persistent file backup. Automatically
    handles cache expiration based on TTL (time-to-live).

    Attributes:
        cache_dir: Directory for cache file storage.
        _memory_cache: In-memory cache dictionary.
    """

    def __init__(self, cache_dir: Path) -> None:
        """Initialize cache manager.

        Args:
            cache_dir: Directory path for storing cache files.
        """
        self.cache_dir: Path = cache_dir
        self.cache_dir.mkdir(parents=True, exist_ok=True)
        self._memory_cache: Dict[str, Tuple[Any, float]] = {}

    def _get_cache_key(self, key: str) -> str:
        """Generate SHA256 hash for cache key.

        Args:
            key: Original cache key.

        Returns:
            Hexadecimal hash string.
        """
        return hashlib.sha256(key.encode()).hexdigest()

    def get(self, key: str, max_age: int = 3600) -> Optional[Any]:
        """Retrieve cached value if not expired.

        Checks memory cache first, then file cache. Automatically removes
        expired entries.

        Args:
            key: Cache key.
            max_age: Maximum age in seconds (default: 1 hour).

        Returns:
            Cached value if found and not expired, otherwise None.

        Example:
            >>> cache.get("search:naruto", max_age=1800)
            [{'id': '1', 'title': 'Naruto'}]
        """
        # Check memory cache
        if key in self._memory_cache:
            value, timestamp = self._memory_cache[key]
            if time.time() - timestamp < max_age:
                return value
            else:
                del self._memory_cache[key]

        # Check file cache
        cache_key = self._get_cache_key(key)
        cache_file = self.cache_dir / f"{cache_key}.cache"

        if cache_file.exists():
            age = time.time() - cache_file.stat().st_mtime
            if age < max_age:
                try:
                    with open(cache_file, 'r', encoding='utf-8') as f:
                        value = json.load(f)
                        self._memory_cache[key] = (value, time.time())
                        return value
                except (json.JSONDecodeError, UnicodeDecodeError, OSError):
                    pass
                # Fallback: try reading as pickle for backward compatibility
                try:
                    with open(cache_file, 'rb') as f:
                        value = pickle.load(f)
                        self._memory_cache[key] = (value, time.time())
                        return value
                except (pickle.PickleError, EOFError, OSError):
                    cache_file.unlink(missing_ok=True)

        return None

    def set(self, key: str, value: Any) -> None:
        """Store value in cache.

        Stores in both memory and file cache for persistence.

        Args:
            key: Cache key.
            value: Value to cache (must be JSON-serializable).

        Example:
            >>> cache.set("search:naruto", results)
        """
        self._memory_cache[key] = (value, time.time())

        cache_key = self._get_cache_key(key)
        cache_file = self.cache_dir / f"{cache_key}.cache"

        try:
            with open(cache_file, 'w', encoding='utf-8') as f:
                json.dump(value, f, ensure_ascii=False, default=str)
        except (OSError, TypeError):
            pass

    def delete(self, key: str) -> None:
        """Delete cached value.

        Removes from both memory and file cache.

        Args:
            key: Cache key to delete.
        """
        self._memory_cache.pop(key, None)

        cache_key = self._get_cache_key(key)
        cache_file = self.cache_dir / f"{cache_key}.cache"
        cache_file.unlink(missing_ok=True)

    def clear(self) -> None:
        """Clear all cached values.

        Removes all entries from memory and deletes all cache files.
        """
        self._memory_cache.clear()

        for cache_file in self.cache_dir.glob("*.cache"):
            cache_file.unlink(missing_ok=True)

    def clear_pattern(self, pattern: str) -> int:
        """Clear cached values matching a pattern.

        Args:
            pattern: String pattern to match in cache keys.

        Returns:
            Number of entries removed.

        Example:
            >>> count = cache.clear_pattern("search:animecix:")
            >>> print(f"Removed {count} entries")
        """
        removed = 0
        keys_to_remove = [k for k in self._memory_cache.keys() if pattern in k]
        for key in keys_to_remove:
            del self._memory_cache[key]
            cache_key = self._get_cache_key(key)
            cache_file = self.cache_dir / f"{cache_key}.cache"
            cache_file.unlink(missing_ok=True)
            removed += 1

        return removed

    def invalidate_provider(self, provider_name: str) -> int:
        """Invalidate all cache entries for a provider.

        Clears search and details cache for the specified provider.

        Args:
            provider_name: Provider identifier.

        Returns:
            Number of entries removed.

        Example:
            >>> cache.invalidate_provider("animecix")
        """
        removed = 0
        patterns = [f"search:{provider_name}:", f"details:{provider_name}:"]

        for pattern in patterns:
            keys_to_remove = [k for k in list(self._memory_cache.keys()) if k.startswith(pattern)]
            for key in keys_to_remove:
                del self._memory_cache[key]
                removed += 1

        # Clear all file cache (conservative approach)
        for cache_file in self.cache_dir.glob("*.cache"):
            cache_file.unlink(missing_ok=True)

        return removed

    def cleanup(self, max_age: int = 86400) -> int:
        """Remove expired cache entries.

        Removes entries older than max_age from both memory and file cache.

        Args:
            max_age: Maximum age in seconds (default: 24 hours).

        Returns:
            Number of entries removed.

        Example:
            >>> # Remove entries older than 1 hour
            >>> count = cache.cleanup(max_age=3600)
        """
        removed = 0
        cutoff = time.time() - max_age

        # Clean memory cache
        keys_to_remove = []
        for key, (value, timestamp) in list(self._memory_cache.items()):
            if timestamp < cutoff:
                keys_to_remove.append(key)

        for key in keys_to_remove:
            del self._memory_cache[key]
            removed += 1

        # Clean file cache
        for cache_file in self.cache_dir.glob("*.cache"):
            if cache_file.stat().st_mtime < cutoff:
                cache_file.unlink(missing_ok=True)
                removed += 1

        return removed

    def get_stats(self) -> Dict[str, Any]:
        """Get cache statistics.

        Returns:
            Dictionary with cache statistics:
                - memory_entries: Number of in-memory entries
                - file_entries: Number of file cache entries
                - total_size_bytes: Total file cache size in bytes
                - total_size_mb: Total file cache size in MB

        Example:
            >>> stats = cache.get_stats()
            >>> print(f"Cache size: {stats['total_size_mb']} MB")
        """
        memory_count = len(self._memory_cache)
        file_count = len(list(self.cache_dir.glob("*.cache")))

        total_size = 0
        for cache_file in self.cache_dir.glob("*.cache"):
            total_size += cache_file.stat().st_size

        return {
            "memory_entries": memory_count,
            "file_entries": file_count,
            "total_size_bytes": total_size,
            "total_size_mb": round(total_size / (1024 * 1024), 2)
        }

__init__ 

__init__(cache_dir: Path) -> None

Initialize cache manager.

Parameters:

Name Type Description Default
cache_dir Path

Directory path for storing cache files.

 required
Source code in weeb_cli/services/cache.py 
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def __init__(self, cache_dir: Path) -> None:
    """Initialize cache manager.

    Args:
        cache_dir: Directory path for storing cache files.
    """
    self.cache_dir: Path = cache_dir
    self.cache_dir.mkdir(parents=True, exist_ok=True)
    self._memory_cache: Dict[str, Tuple[Any, float]] = {}

get 

get(key: str, max_age: int = 3600) -> Optional[Any]

Retrieve cached value if not expired.

Checks memory cache first, then file cache. Automatically removes expired entries.

Parameters:

Name Type Description Default
key str

Cache key.

 required
max_age int

Maximum age in seconds (default: 1 hour).

 3600

Returns:

Type Description
Optional[Any]

Cached value if found and not expired, otherwise None.
Example

cache.get("search:naruto", max_age=1800) [{'id': '1', 'title': 'Naruto'}]

Source code in weeb_cli/services/cache.py 
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def get(self, key: str, max_age: int = 3600) -> Optional[Any]:
    """Retrieve cached value if not expired.

    Checks memory cache first, then file cache. Automatically removes
    expired entries.

    Args:
        key: Cache key.
        max_age: Maximum age in seconds (default: 1 hour).

    Returns:
        Cached value if found and not expired, otherwise None.

    Example:
        >>> cache.get("search:naruto", max_age=1800)
        [{'id': '1', 'title': 'Naruto'}]
    """
    # Check memory cache
    if key in self._memory_cache:
        value, timestamp = self._memory_cache[key]
        if time.time() - timestamp < max_age:
            return value
        else:
            del self._memory_cache[key]

    # Check file cache
    cache_key = self._get_cache_key(key)
    cache_file = self.cache_dir / f"{cache_key}.cache"

    if cache_file.exists():
        age = time.time() - cache_file.stat().st_mtime
        if age < max_age:
            try:
                with open(cache_file, 'r', encoding='utf-8') as f:
                    value = json.load(f)
                    self._memory_cache[key] = (value, time.time())
                    return value
            except (json.JSONDecodeError, UnicodeDecodeError, OSError):
                pass
            # Fallback: try reading as pickle for backward compatibility
            try:
                with open(cache_file, 'rb') as f:
                    value = pickle.load(f)
                    self._memory_cache[key] = (value, time.time())
                    return value
            except (pickle.PickleError, EOFError, OSError):
                cache_file.unlink(missing_ok=True)

    return None

set 

set(key: str, value: Any) -> None

Store value in cache.

Stores in both memory and file cache for persistence.

Parameters:

Name Type Description Default
key str

Cache key.

 required
value Any

Value to cache (must be JSON-serializable).

 required
Example

cache.set("search:naruto", results)

Source code in weeb_cli/services/cache.py 
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def set(self, key: str, value: Any) -> None:
    """Store value in cache.

    Stores in both memory and file cache for persistence.

    Args:
        key: Cache key.
        value: Value to cache (must be JSON-serializable).

    Example:
        >>> cache.set("search:naruto", results)
    """
    self._memory_cache[key] = (value, time.time())

    cache_key = self._get_cache_key(key)
    cache_file = self.cache_dir / f"{cache_key}.cache"

    try:
        with open(cache_file, 'w', encoding='utf-8') as f:
            json.dump(value, f, ensure_ascii=False, default=str)
    except (OSError, TypeError):
        pass

delete 

delete(key: str) -> None

Delete cached value.

Removes from both memory and file cache.

Parameters:

Name Type Description Default
key str

Cache key to delete.

 required
Source code in weeb_cli/services/cache.py 
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def delete(self, key: str) -> None:
    """Delete cached value.

    Removes from both memory and file cache.

    Args:
        key: Cache key to delete.
    """
    self._memory_cache.pop(key, None)

    cache_key = self._get_cache_key(key)
    cache_file = self.cache_dir / f"{cache_key}.cache"
    cache_file.unlink(missing_ok=True)

clear 

clear() -> None

Clear all cached values.

Removes all entries from memory and deletes all cache files.

Source code in weeb_cli/services/cache.py 
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def clear(self) -> None:
    """Clear all cached values.

    Removes all entries from memory and deletes all cache files.
    """
    self._memory_cache.clear()

    for cache_file in self.cache_dir.glob("*.cache"):
        cache_file.unlink(missing_ok=True)

clear_pattern 

clear_pattern(pattern: str) -> int

Clear cached values matching a pattern.

Parameters:

Name Type Description Default
pattern str

String pattern to match in cache keys.

 required

Returns:

Type Description
int

Number of entries removed.
Example

count = cache.clear_pattern("search:animecix:") print(f"Removed {count} entries")

Source code in weeb_cli/services/cache.py 
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def clear_pattern(self, pattern: str) -> int:
    """Clear cached values matching a pattern.

    Args:
        pattern: String pattern to match in cache keys.

    Returns:
        Number of entries removed.

    Example:
        >>> count = cache.clear_pattern("search:animecix:")
        >>> print(f"Removed {count} entries")
    """
    removed = 0
    keys_to_remove = [k for k in self._memory_cache.keys() if pattern in k]
    for key in keys_to_remove:
        del self._memory_cache[key]
        cache_key = self._get_cache_key(key)
        cache_file = self.cache_dir / f"{cache_key}.cache"
        cache_file.unlink(missing_ok=True)
        removed += 1

    return removed

invalidate_provider 

invalidate_provider(provider_name: str) -> int

Invalidate all cache entries for a provider.

Clears search and details cache for the specified provider.

Parameters:

Name Type Description Default
provider_name str

Provider identifier.

 required

Returns:

Type Description
int

Number of entries removed.
Example

cache.invalidate_provider("animecix")

Source code in weeb_cli/services/cache.py 
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def invalidate_provider(self, provider_name: str) -> int:
    """Invalidate all cache entries for a provider.

    Clears search and details cache for the specified provider.

    Args:
        provider_name: Provider identifier.

    Returns:
        Number of entries removed.

    Example:
        >>> cache.invalidate_provider("animecix")
    """
    removed = 0
    patterns = [f"search:{provider_name}:", f"details:{provider_name}:"]

    for pattern in patterns:
        keys_to_remove = [k for k in list(self._memory_cache.keys()) if k.startswith(pattern)]
        for key in keys_to_remove:
            del self._memory_cache[key]
            removed += 1

    # Clear all file cache (conservative approach)
    for cache_file in self.cache_dir.glob("*.cache"):
        cache_file.unlink(missing_ok=True)

    return removed

cleanup 

cleanup(max_age: int = 86400) -> int

Remove expired cache entries.

Removes entries older than max_age from both memory and file cache.

Parameters:

Name Type Description Default
max_age int

Maximum age in seconds (default: 24 hours).

 86400

Returns:

Type Description
int

Number of entries removed.
Example

Remove entries older than 1 hour

count = cache.cleanup(max_age=3600)

Source code in weeb_cli/services/cache.py 
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def cleanup(self, max_age: int = 86400) -> int:
    """Remove expired cache entries.

    Removes entries older than max_age from both memory and file cache.

    Args:
        max_age: Maximum age in seconds (default: 24 hours).

    Returns:
        Number of entries removed.

    Example:
        >>> # Remove entries older than 1 hour
        >>> count = cache.cleanup(max_age=3600)
    """
    removed = 0
    cutoff = time.time() - max_age

    # Clean memory cache
    keys_to_remove = []
    for key, (value, timestamp) in list(self._memory_cache.items()):
        if timestamp < cutoff:
            keys_to_remove.append(key)

    for key in keys_to_remove:
        del self._memory_cache[key]
        removed += 1

    # Clean file cache
    for cache_file in self.cache_dir.glob("*.cache"):
        if cache_file.stat().st_mtime < cutoff:
            cache_file.unlink(missing_ok=True)
            removed += 1

    return removed

get_stats 

get_stats() -> Dict[str, Any]

Get cache statistics.

Returns:

Type Description
Dict[str, Any]

Dictionary with cache statistics: - memory_entries: Number of in-memory entries - file_entries: Number of file cache entries - total_size_bytes: Total file cache size in bytes - total_size_mb: Total file cache size in MB
Example

stats = cache.get_stats() print(f"Cache size: {stats['total_size_mb']} MB")

Source code in weeb_cli/services/cache.py 
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def get_stats(self) -> Dict[str, Any]:
    """Get cache statistics.

    Returns:
        Dictionary with cache statistics:
            - memory_entries: Number of in-memory entries
            - file_entries: Number of file cache entries
            - total_size_bytes: Total file cache size in bytes
            - total_size_mb: Total file cache size in MB

    Example:
        >>> stats = cache.get_stats()
        >>> print(f"Cache size: {stats['total_size_mb']} MB")
    """
    memory_count = len(self._memory_cache)
    file_count = len(list(self.cache_dir.glob("*.cache")))

    total_size = 0
    for cache_file in self.cache_dir.glob("*.cache"):
        total_size += cache_file.stat().st_size

    return {
        "memory_entries": memory_count,
        "file_entries": file_count,
        "total_size_bytes": total_size,
        "total_size_mb": round(total_size / (1024 * 1024), 2)
    }

cached 

cached(max_age: int = 3600, cache_manager: Optional[CacheManager] = None)

Decorator for automatic function result caching.

Caches function results based on arguments. Cache key is generated from function name and arguments.

Parameters:

Name Type Description Default
max_age int

Cache TTL in seconds (default: 1 hour).

 3600
cache_manager Optional[CacheManager]

Optional custom cache manager instance.

 None

Returns:

Type Description

Decorator function.
Example

@cached(max_age=1800) ... def fetch_anime_details(anime_id): ... # Expensive operation ... return api.get_details(anime_id)

First call: executes function

details = fetch_anime_details("123")

Second call within 30 min: returns cached result

details = fetch_anime_details("123")

Source code in weeb_cli/services/cache.py 
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def cached(max_age: int = 3600, cache_manager: Optional[CacheManager] = None):
    """Decorator for automatic function result caching.

    Caches function results based on arguments. Cache key is generated
    from function name and arguments.

    Args:
        max_age: Cache TTL in seconds (default: 1 hour).
        cache_manager: Optional custom cache manager instance.

    Returns:
        Decorator function.

    Example:
        >>> @cached(max_age=1800)
        ... def fetch_anime_details(anime_id):
        ...     # Expensive operation
        ...     return api.get_details(anime_id)

        >>> # First call: executes function
        >>> details = fetch_anime_details("123")

        >>> # Second call within 30 min: returns cached result
        >>> details = fetch_anime_details("123")
    """
    def decorator(func: Callable) -> Callable:
        @wraps(func)
        def wrapper(*args, **kwargs):
            # Generate cache key from function name and arguments
            key_parts = [func.__name__]
            key_parts.extend(str(arg) for arg in args)
            key_parts.extend(f"{k}={v}" for k, v in sorted(kwargs.items()))
            cache_key = ":".join(key_parts)

            cm = cache_manager or _get_global_cache()

            # Try to get from cache
            result = cm.get(cache_key, max_age)
            if result is not None:
                return result

            # Execute function and cache result
            result = func(*args, **kwargs)
            cm.set(cache_key, result)
            return result

        return wrapper
    return decorator

get_cache 

get_cache() -> CacheManager

Get global cache instance.

Returns:

Type Description
CacheManager

Global CacheManager instance for application-wide use.
Example

from weeb_cli.services.cache import get_cache cache = get_cache() cache.set("key", "value")

Source code in weeb_cli/services/cache.py 
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def get_cache() -> CacheManager:
    """Get global cache instance.

    Returns:
        Global CacheManager instance for application-wide use.

    Example:
        >>> from weeb_cli.services.cache import get_cache
        >>> cache = get_cache()
        >>> cache.set("key", "value")
    """
    return _get_global_cache()