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Constants ¶
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const ( DefaultKVStoreName = "goleveldb" DefaultDataDir = "./data" DefaultDatabases = 16 DefaulSlots = 1024 DefaultTTLCheckInterval = 1 MaxTTLCheckInterval = 3600 DefaultChSize = 10 DefaultWorkerCn = 10 DefaultMgrtBatchKeyCn = 10000 )
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const ( // https://en.wikipedia.org/wiki/Bloom_filter // use github.com/bits-and-blooms/bloom/v3 EstimateParameters to check // 85M (BFBitSize/8) ~ 50 million keys and 0.01 False Positive Rate (bit size: 718879379) DefaultBFBitSize = 718879379 // 10 hash 0.01 False Positive Rate DefaultBFHashCn = 10 // http://pages.cs.wisc.edu/~jussara/papers/00ton.pdf // use github.com/tylertreat/BoomFilters // 502533109 bit size ~ 64M DefaultCBFItmeCn = 50 * 1024 * 1024 // counter bucket size, counter Max 2^4 - 1 // in this db key stats case, use DefaultCBFBucketSize is ok DefaultCBFBucketSize = 4 // false-positive rate DefaultCBFfpRate = 0.01 )
Variables ¶
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Functions ¶
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Types ¶
type AsyncTask ¶
type AsyncTask struct {
Name string `mapstructure:"name"`
ChSize int64 `mapstructure:"chSize"`
WorkerCn int `mapstructure:"workerCn"`
}
func DefaultMigrateAsyncTask ¶
func DefaultMigrateAsyncTask() *AsyncTask
type OpenkvOptions ¶
type OpenkvOptions struct {
DataDir string `mapstructure:"dataDir"`
KVStoreName string `mapstructure:"kvStoreName"`
DBPath string `mapstructure:"dbPath"`
DBSyncCommit int `mapstructure:"dbSyncCommit"`
BufferOpCommit bool `mapstructure:"bufferOpCommit"`
}
func DefaultOpenkvOptions ¶
func DefaultOpenkvOptions() *OpenkvOptions
type StorgerOptions ¶
type StorgerOptions struct {
OpenkvOptions `mapstructure:",squash"`
Databases int `mapstructure:"databases"`
Slots int `mapstructure:"slots"`
TTLCheckInterval int `mapstructure:"ttlCheckInterval"`
CBFItmeCn uint `mapstructure:"cbfItmeCn"`
CBFBucketSize uint8 `mapstructure:"cbfBucketSize"`
CBFFpRate float64 `mapstructure:"cbfFpRate"`
MigrateAsyncTask AsyncTask `mapstructure:"migrateAsyncTask"`
MigrateBatchKeyCn int `mapstructure:"migrateBatchKeyCn"`
}
func DefaultStoragerOptions ¶
func DefaultStoragerOptions() *StorgerOptions
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