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Tweak cache counters #2575

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Jul 18, 2022
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Tweak cache counters #2575

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202d0f7
Tweak cache counters
neilalexander Jul 18, 2022
6b66da1
Remove line left by accident
neilalexander Jul 18, 2022
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6 changes: 3 additions & 3 deletions internal/caching/impl_ristretto.go
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Original file line number Diff line number Diff line change
Expand Up @@ -44,9 +44,9 @@ const (

func NewRistrettoCache(maxCost config.DataUnit, maxAge time.Duration, enablePrometheus bool) *Caches {
cache, err := ristretto.NewCache(&ristretto.Config{
NumCounters: 1e5, // 10x number of expected cache items, affects bloom filter size, gives us room for 10,000 currently
BufferItems: 64, // recommended by the ristretto godocs as a sane buffer size value
MaxCost: int64(maxCost),
NumCounters: int64((maxCost / 1024) * 10), // 10 counters per 1KB data, affects bloom filter size
BufferItems: 64, // recommended by the ristretto godocs as a sane buffer size value
MaxCost: int64(maxCost), // max cost is in bytes, as per the Dendrite config
Metrics: true,
KeyToHash: func(key interface{}) (uint64, uint64) {
return z.KeyToHash(key)
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