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README.md
@actions/cache
Functions necessary for caching dependencies and build outputs to improve workflow execution time.
See "Caching dependencies to speed up workflows" for how caching works.
Note that GitHub will remove any cache entries that have not been accessed in over 7 days. There is no limit on the number of caches you can store, but the total size of all caches in a repository is limited to 10 GB. If you exceed this limit, GitHub will save your cache but will begin evicting caches until the total size is less than 10 GB.
Usage
This package is used by the v2+ versions of our first party cache action. You can find an example implementation in the cache repo here.
Save Cache
Saves a cache containing the files in paths
using the key
provided. The files would be compressed using zstandard compression algorithm if zstd is installed, otherwise gzip is used. Function returns the cache id if the cache was saved succesfully and throws an error if cache upload fails.
const cache = require('@actions/cache');
const paths = [
'node_modules',
'packages/*/node_modules/'
]
const key = 'npm-foobar-d5ea0750'
const cacheId = await cache.saveCache(paths, key)
Restore Cache
Restores a cache based on key
and restoreKeys
to the paths
provided. Function returns the cache key for cache hit and returns undefined if cache not found.
const cache = require('@actions/cache');
const paths = [
'node_modules',
'packages/*/node_modules/'
]
const key = 'npm-foobar-d5ea0750'
const restoreKeys = [
'npm-foobar-',
'npm-'
]
const cacheKey = await cache.restoreCache(paths, key, restoreKeys)
Cache segment restore timeout
A cache gets downloaded in multiple segments of fixed sizes (now 128MB
to fail-fast, previously 1GB
for a 32-bit
runner and 2GB
for a 64-bit
runner were used). Sometimes, a segment download gets stuck which causes the workflow job to be stuck forever and fail. Version v3.0.4
of cache package introduces a segment download timeout. The segment download timeout will allow the segment download to get aborted and hence allow the job to proceed with a cache miss.
Default value of this timeout is 10 minutes (starting v3.2.1
and higher, previously 60 minutes in versions between v.3.0.4
and v3.2.0
, both included) and can be customized by specifying an environment variable named SEGMENT_DOWNLOAD_TIMEOUT_MINS
with timeout value in minutes.