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Zlib

cachetory.serializers.compressors.ZlibCompressor

Uses the built-in zlib compression.

Source code in cachetory/serializers/compressors/zlib.py 
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class ZlibCompressor(Serializer[bytes, bytes]):
    """Uses the built-in [zlib](https://docs.python.org/3/library/zlib.html) compression."""

    __slots__ = ("_level",)

    @classmethod
    def from_url(cls, url: str) -> ZlibCompressor:
        """
        Construct serializer from the URL.

        # Supported schema's

        - `zlib://`

        # URL parameters

        | Parameter           |                                                                 |
        |---------------------|-----------------------------------------------------------------|
        | `compression-level` | From `0` (no compression) to `9` (slowest and best compression) |
        """
        params = _UrlParams.model_validate(dict(parse_qsl(urlparse(url).query)))
        return cls(compression_level=params.compression_level)

    def __init__(self, *, compression_level: int = zlib.Z_DEFAULT_COMPRESSION) -> None:
        self._level = compression_level

    def serialize(self, value: bytes) -> bytes:
        return zlib.compress(value, level=self._level)

    def deserialize(self, data: bytes) -> bytes:
        return zlib.decompress(data)

from_url classmethod 

from_url(url: str) -> ZlibCompressor

Construct serializer from the URL.

Supported schema's

  • zlib://

URL parameters

Parameter
compression-level From 0 (no compression) to 9 (slowest and best compression)
Source code in cachetory/serializers/compressors/zlib.py 
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@classmethod
def from_url(cls, url: str) -> ZlibCompressor:
    """
    Construct serializer from the URL.

    # Supported schema's

    - `zlib://`

    # URL parameters

    | Parameter           |                                                                 |
    |---------------------|-----------------------------------------------------------------|
    | `compression-level` | From `0` (no compression) to `9` (slowest and best compression) |
    """
    params = _UrlParams.model_validate(dict(parse_qsl(urlparse(url).query)))
    return cls(compression_level=params.compression_level)