Local atomic cache manager
I repeatedly find myself writing partitioned keyed caching systems, akin to Go's module cache. To DRY myself I created this.
It provides:
- Partitioned cache entries:
/ / - Atomic directory and file cache entry creation and replacement.
Usage
cache, err := localcache.New("myapp")
// Create a temporarily unaddressable file in the cache.
tx, f, err := cache.Create("some-key")
// Write to f
// Commit the file to the cache.
err = cache.Commit(tx)
// Load the cache entry back.
data, err := cache.ReadFile("some-key")
// Open the cache entry for reading.
data, err := cache.Open("some-key")
// Create a temporarily unaddressable directory with the same key as the previous file.
tx, dir, err := cache.Mkdir("some-key")
// Atomically replace the previous file with the new directory.
err := cache.Commit(tx)
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