badger max compaction levels config

config/config.example.toml

@@ -12,8 +12,10 @@ memory-cache-size = 4096
 cache-ttl = 7200
 
 [storage]
-# enable value log gc will reduce disk storage usage
+# enable badger value log gc will reduce disk storage usage
 value-log-gc = true
+# compaction level should be increased when data too big can badger panic
+max-compaction-levels = 7
 
 [network]
 # the public endpoint to receive peer packets, may be a proxy or load balancer

config/config.go

@@ -48,7 +48,8 @@ type Custom struct {
 		CacheTTL             int        `toml:"cache-ttl"`
 	} `toml:"node"`
 	Storage struct {
-		ValueLogGC bool `toml:"value-log-gc"`
+		ValueLogGC          bool `toml:"value-log-gc"`
+		MaxCompactionLevels int  `toml:"max-compaction-levels"`
 	} `toml:"storage"`
 	Network struct {
 		Listener        string   `toml:"listener"`

storage/badger.go

@@ -62,6 +62,10 @@ func openDB(dir string, sync bool, custom *config.Custom) (*badger.DB, error) {
 	opts = opts.WithBaseLevelSize(16 << 20)
 	opts = opts.WithLevelSizeMultiplier(16)
 	opts = opts.WithMaxLevels(7)
+	if custom != nil && custom.Storage.MaxCompactionLevels > 0 {
+		opts = opts.WithMaxLevels(custom.Storage.MaxCompactionLevels)
+	}
+
 	db, err := badger.Open(opts)
 	if err != nil {
 		return nil, err