core/state/snapshot: replace bigcache with fastcache (#21)

core/state/snapshot/disklayer.go

@@ -19,7 +19,7 @@ package snapshot
 import (
 	"sync"
 
-	"github.com/allegro/bigcache"
+	"github.com/VictoriaMetrics/fastcache"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/ethdb"
@@ -30,7 +30,7 @@ import (
 type diskLayer struct {
 	journal string              // Path of the snapshot journal to use on shutdown
 	db      ethdb.KeyValueStore // Key-value store containing the base snapshot
-	cache   *bigcache.BigCache  // Cache to avoid hitting the disk for direct access
+	cache   *fastcache.Cache    // Cache to avoid hitting the disk for direct access
 
 	root  common.Hash // Root hash of the base snapshot
 	stale bool        // Signals that the layer became stale (state progressed)
@@ -80,17 +80,15 @@ func (dl *diskLayer) AccountRLP(hash common.Hash) ([]byte, error) {
 	if dl.stale {
 		return nil, ErrSnapshotStale
 	}
-	key := string(hash[:])
-
 	// Try to retrieve the account from the memory cache
-	if blob, err := dl.cache.Get(key); err == nil {
+	if blob := dl.cache.Get(nil, hash[:]); blob != nil {
 		snapshotCleanHitMeter.Mark(1)
 		snapshotCleanReadMeter.Mark(int64(len(blob)))
 		return blob, nil
 	}
 	// Cache doesn't contain account, pull from disk and cache for later
 	blob := rawdb.ReadAccountSnapshot(dl.db, hash)
-	dl.cache.Set(key, blob)
+	dl.cache.Set(hash[:], blob)
 
 	snapshotCleanMissMeter.Mark(1)
 	snapshotCleanWriteMeter.Mark(int64(len(blob)))
@@ -109,10 +107,10 @@ func (dl *diskLayer) Storage(accountHash, storageHash common.Hash) ([]byte, erro
 	if dl.stale {
 		return nil, ErrSnapshotStale
 	}
-	key := string(append(accountHash[:], storageHash[:]...))
+	key := append(accountHash[:], storageHash[:]...)
 
 	// Try to retrieve the storage slot from the memory cache
-	if blob, err := dl.cache.Get(key); err == nil {
+	if blob := dl.cache.Get(nil, key); blob != nil {
 		snapshotCleanHitMeter.Mark(1)
 		snapshotCleanReadMeter.Mark(int64(len(blob)))
 		return blob, nil

core/state/snapshot/generate.go

@@ -22,7 +22,7 @@ import (
 	"math/big"
 	"time"
 
-	"github.com/allegro/bigcache"
+	"github.com/VictoriaMetrics/fastcache"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/crypto"
@@ -196,13 +196,7 @@ func generateSnapshot(db ethdb.KeyValueStore, journal string, root common.Hash)
 		return nil, err
 	}
 	// New snapshot generated, construct a brand new base layer
-	cache, _ := bigcache.NewBigCache(bigcache.Config{ // TODO(karalabe): dedup
-		Shards:             1024,
-		LifeWindow:         time.Hour,
-		MaxEntriesInWindow: 512 * 1024,
-		MaxEntrySize:       512,
-		HardMaxCacheSize:   512,
-	})
+	cache := fastcache.New(512 * 1024 * 1024)
 	return &diskLayer{
 		journal: journal,
 		db:      db,

core/state/snapshot/snapshot.go

@@ -22,9 +22,8 @@ import (
 	"fmt"
 	"os"
 	"sync"
-	"time"
 
-	"github.com/allegro/bigcache"
+	"github.com/VictoriaMetrics/fastcache"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 	"github.com/ethereum/go-ethereum/ethdb"
@@ -323,7 +322,7 @@ func diffToDisk(bottom *diffLayer) *diskLayer {
 		if len(data) > 0 {
 			// Account was updated, push to disk
 			rawdb.WriteAccountSnapshot(batch, hash, data)
-			base.cache.Set(string(hash[:]), data)
+			base.cache.Set(hash[:], data)
 
 			if batch.ValueSize() > ethdb.IdealBatchSize {
 				if err := batch.Write(); err != nil {
@@ -334,13 +333,13 @@ func diffToDisk(bottom *diffLayer) *diskLayer {
 		} else {
 			// Account was deleted, remove all storage slots too
 			rawdb.DeleteAccountSnapshot(batch, hash)
-			base.cache.Set(string(hash[:]), nil)
+			base.cache.Set(hash[:], nil)
 
 			it := rawdb.IterateStorageSnapshots(base.db, hash)
 			for it.Next() {
 				if key := it.Key(); len(key) == 65 { // TODO(karalabe): Yuck, we should move this into the iterator
 					batch.Delete(key)
-					base.cache.Delete(string(key[1:]))
+					base.cache.Del(key[1:])
 				}
 			}
 			it.Release()
@@ -351,10 +350,10 @@ func diffToDisk(bottom *diffLayer) *diskLayer {
 		for storageHash, data := range storage {
 			if len(data) > 0 {
 				rawdb.WriteStorageSnapshot(batch, accountHash, storageHash, data)
-				base.cache.Set(string(append(accountHash[:], storageHash[:]...)), data)
+				base.cache.Set(append(accountHash[:], storageHash[:]...), data)
 			} else {
 				rawdb.DeleteStorageSnapshot(batch, accountHash, storageHash)
-				base.cache.Set(string(append(accountHash[:], storageHash[:]...)), nil)
+				base.cache.Set(append(accountHash[:], storageHash[:]...), nil)
 			}
 		}
 		if batch.ValueSize() > ethdb.IdealBatchSize {
@@ -401,17 +400,10 @@ func loadSnapshot(db ethdb.KeyValueStore, journal string, root common.Hash) (sna
 	if baseRoot == (common.Hash{}) {
 		return nil, errors.New("missing or corrupted snapshot")
 	}
-	cache, _ := bigcache.NewBigCache(bigcache.Config{ // TODO(karalabe): dedup
-		Shards:             1024,
-		LifeWindow:         time.Hour,
-		MaxEntriesInWindow: 512 * 1024,
-		MaxEntrySize:       512,
-		HardMaxCacheSize:   512,
-	})
 	base := &diskLayer{
 		journal: journal,
 		db:      db,
-		cache:   cache,
+		cache:   fastcache.New(512 * 1024 * 1024),
 		root:    baseRoot,
 	}
 	// Load all the snapshot diffs from the journal, failing if their chain is broken

core/state/snapshot/snapshot_test.go

@@ -19,9 +19,8 @@ package snapshot
 import (
 	"fmt"
 	"testing"
-	"time"
 
-	"github.com/allegro/bigcache"
+	"github.com/VictoriaMetrics/fastcache"
 	"github.com/ethereum/go-ethereum/common"
 	"github.com/ethereum/go-ethereum/core/rawdb"
 )
@@ -31,11 +30,10 @@ import (
 // to check internal corner case around the bottom-most memory accumulator.
 func TestDiskLayerExternalInvalidationFullFlatten(t *testing.T) {
 	// Create an empty base layer and a snapshot tree out of it
-	cache, _ := bigcache.NewBigCache(bigcache.DefaultConfig(time.Minute))
 	base := &diskLayer{
 		db:    rawdb.NewMemoryDatabase(),
 		root:  common.HexToHash("0x01"),
-		cache: cache,
+		cache: fastcache.New(1024 * 500),
 	}
 	snaps := &Tree{
 		layers: map[common.Hash]snapshot{
@@ -77,11 +75,10 @@ func TestDiskLayerExternalInvalidationFullFlatten(t *testing.T) {
 // layer to check the usual mode of operation where the accumulator is retained.
 func TestDiskLayerExternalInvalidationPartialFlatten(t *testing.T) {
 	// Create an empty base layer and a snapshot tree out of it
-	cache, _ := bigcache.NewBigCache(bigcache.DefaultConfig(time.Minute))
 	base := &diskLayer{
 		db:    rawdb.NewMemoryDatabase(),
 		root:  common.HexToHash("0x01"),
-		cache: cache,
+		cache: fastcache.New(1024 * 500),
 	}
 	snaps := &Tree{
 		layers: map[common.Hash]snapshot{
@@ -126,11 +123,10 @@ func TestDiskLayerExternalInvalidationPartialFlatten(t *testing.T) {
 // to check internal corner case around the bottom-most memory accumulator.
 func TestDiffLayerExternalInvalidationFullFlatten(t *testing.T) {
 	// Create an empty base layer and a snapshot tree out of it
-	cache, _ := bigcache.NewBigCache(bigcache.DefaultConfig(time.Minute))
 	base := &diskLayer{
 		db:    rawdb.NewMemoryDatabase(),
 		root:  common.HexToHash("0x01"),
-		cache: cache,
+		cache: fastcache.New(1024 * 500),
 	}
 	snaps := &Tree{
 		layers: map[common.Hash]snapshot{
@@ -175,11 +171,10 @@ func TestDiffLayerExternalInvalidationFullFlatten(t *testing.T) {
 // layer to check the usual mode of operation where the accumulator is retained.
 func TestDiffLayerExternalInvalidationPartialFlatten(t *testing.T) {
 	// Create an empty base layer and a snapshot tree out of it
-	cache, _ := bigcache.NewBigCache(bigcache.DefaultConfig(time.Minute))
 	base := &diskLayer{
 		db:    rawdb.NewMemoryDatabase(),
 		root:  common.HexToHash("0x01"),
-		cache: cache,
+		cache: fastcache.New(1024 * 500),
 	}
 	snaps := &Tree{
 		layers: map[common.Hash]snapshot{
@@ -240,11 +235,10 @@ func TestPostCapBasicDataAccess(t *testing.T) {
 		}
 	}
 	// Create a starting base layer and a snapshot tree out of it
-	cache, _ := bigcache.NewBigCache(bigcache.DefaultConfig(time.Minute))
 	base := &diskLayer{
 		db:    rawdb.NewMemoryDatabase(),
 		root:  common.HexToHash("0x01"),
-		cache: cache,
+		cache: fastcache.New(1024 * 500),
 	}
 	snaps := &Tree{
 		layers: map[common.Hash]snapshot{