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*: add duties cache #4227

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fd7b00b
Add duties cache
KaloyanTanev Jan 16, 2026
b5f3d01
Fix beaconmock
KaloyanTanev Jan 16, 2026
a2d6fe7
Invalidate duties cache on reorg event
KaloyanTanev Jan 19, 2026
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23 changes: 18 additions & 5 deletions app/app.go
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Original file line number Diff line number Diff line change
Expand Up @@ -480,16 +480,22 @@ func wireCoreWorkflow(ctx context.Context, life *lifecycle.Manager, conf Config,
valCache := eth2wrap.NewValidatorCache(eth2Cl, eth2Pubkeys)
eth2Cl.SetValidatorCache(valCache.GetByHead)

firstValCacheRefresh := true
firstCacheRefresh := true
refreshedBySlot := true

// Setup duties cache, refreshing it every epoch.
dutiesCache := eth2wrap.NewDutiesCache(eth2Cl, []eth2p0.ValidatorIndex{})
eth2Cl.SetDutiesCache(dutiesCache.ProposerDutiesByEpoch, dutiesCache.AttesterDutiesByEpoch, dutiesCache.SyncDutiesByEpoch)

sseListener.SubscribeChainReorgEvent(dutiesCache.InvalidateCache)

var fvcrLock sync.RWMutex

shouldUpdateCache := func(slot core.Slot, lock *sync.RWMutex) bool {
lock.RLock()
defer lock.RUnlock()

if !slot.FirstInEpoch() && !firstValCacheRefresh && refreshedBySlot {
if !slot.FirstInEpoch() && !firstCacheRefresh && refreshedBySlot {
return false
}

Expand All @@ -504,7 +510,7 @@ func wireCoreWorkflow(ctx context.Context, life *lifecycle.Manager, conf Config,
fvcrLock.Lock()
defer fvcrLock.Unlock()

ctx = log.WithCtx(ctx, z.Bool("first_refresh", firstValCacheRefresh))
ctx = log.WithCtx(ctx, z.Bool("first_refresh", firstCacheRefresh))

log.Info(ctx, "Refreshing validator cache")

Expand All @@ -518,14 +524,21 @@ func wireCoreWorkflow(ctx context.Context, life *lifecycle.Manager, conf Config,

valCache.Trim()

_, _, refresh, err := valCache.GetBySlot(ctx, slotToFetch)
activeValidators, _, refresh, err := valCache.GetBySlot(ctx, slotToFetch)
if err != nil {
log.Error(ctx, "Failed to refresh validator cache", err)
return err
}

vIdxs := []eth2p0.ValidatorIndex{}
for idx := range activeValidators {
vIdxs = append(vIdxs, idx)
}

dutiesCache.UpdateCacheIndices(ctx, vIdxs)

refreshedBySlot = refresh
firstValCacheRefresh = false
firstCacheRefresh = false

return nil
})
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