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Cache plugin: replace ARC cache with SIEVE

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This commit is contained in:
Frank Denis 2024-01-19 00:05:33 +01:00
parent 63f8d9b30d
commit f2484f5bd5
19 changed files with 434 additions and 845 deletions
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11
dnscrypt-proxy/plugin_cache.go
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@ -6,8 +6,8 @@ import (
"sync"
"time"
lru "github.com/hashicorp/golang-lru"
"github.com/miekg/dns"
sieve "github.com/opencoff/go-sieve"
)
const StaleResponseTTL = 30 * time.Second
@ -19,7 +19,7 @@ type CachedResponse struct {
type CachedResponses struct {
sync.RWMutex
cache *lru.ARCCache
cache *sieve.Sieve[[32]byte, CachedResponse]
}
var cachedResponses CachedResponses
@ -75,12 +75,11 @@ func (plugin *PluginCache) Eval(pluginsState *PluginsState, msg *dns.Msg) error
cachedResponses.RUnlock()
return nil
}
cachedAny, ok := cachedResponses.cache.Get(cacheKey)
cached, ok := cachedResponses.cache.Get(cacheKey)
if !ok {
cachedResponses.RUnlock()
return nil
}
cached := cachedAny.(CachedResponse)
expiration := cached.expiration
synth := cached.msg.Copy()
cachedResponses.RUnlock()
@ -151,8 +150,8 @@ func (plugin *PluginCacheResponse) Eval(pluginsState *PluginsState, msg *dns.Msg
cachedResponses.Lock()
if cachedResponses.cache == nil {
var err error
cachedResponses.cache, err = lru.NewARC(pluginsState.cacheSize)
if err != nil {
cachedResponses.cache = sieve.New[[32]byte, CachedResponse](pluginsState.cacheSize)
if cachedResponses.cache == nil {
cachedResponses.Unlock()
return err
}