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This PR adds
MAX_CACHE_SIZE
in config, which will solve the following issues:MAX_CACHE_SIZE
is set in number, with unit of MiB, the default value is 0, which will remain current setup, if this value is set, for example 50, then a background task will run alongside with WebP Server Go, that task will ensure the following directories will be below 50MiB, seperately../metadata
./exhaust
./remote-raw
If any of the above directories' size goes above setting value, the oldest file will be deleted to make space.
Note, this will keep the above directories' size seperately, so there can be the following situation with total size of 101MiB.
./metadata
(4MiB)./exhaust
(48MiB)./remote-raw
(49MiB)Also, this PR fixes a bug where
CACHE_TTL
should beWEBP_CACHE_TTL
in environment variable.