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[#1523] writecache: Simplify logic

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1. Remove in-memory cache. It doesn't persist objects and if we want
   more speed, `NoSync` option can be used for the bolt DB.
2. Put to the metabase in a synchronous fashion. This considerably
   simplifies overall logic and plays nicely with the metabase bolt DB
   batch settings.

Signed-off-by: Evgenii Stratonikov <evgeniy@nspcc.ru>
This commit is contained in:
Evgenii Stratonikov 2022-07-07 15:52:40 +03:00 • committed by fyrchik
parent 4176b2a1bc
commit ddaed283e9
9 changed files with 140 additions and 328 deletions
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14
pkg/local_object_storage/writecache/get.go
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@ -14,20 +14,6 @@ import (
func (c *cache) Get(addr oid.Address) (*objectSDK.Object, error) {
saddr := addr.EncodeToString()
c.mtx.RLock()
for i := range c.mem {
if saddr == c.mem[i].addr {
data := c.mem[i].data
c.mtx.RUnlock()
// We unmarshal object instead of using cached value to avoid possibility
// of unintentional object corruption by caller.
// It is safe to unmarshal without mutex, as storage under `c.mem[i].data` slices is not reused.
obj := objectSDK.New()
return obj, obj.Unmarshal(data)
}
}
c.mtx.RUnlock()
value, err := Get(c.db, []byte(saddr))
if err == nil {
obj := objectSDK.New()