Documentation
¶
Overview ¶
Package backend defines a standard interface for etcd's backend MVCC storage.
Index ¶
Constants ¶
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const ( // DefaultQuotaBytes is the number of bytes the backend Size may // consume before exceeding the space quota. DefaultQuotaBytes = int64(2 * 1024 * 1024 * 1024) // 2GB // MaxQuotaBytes is the maximum number of bytes suggested for a backend // quota. A larger quota may lead to degraded performance. MaxQuotaBytes = int64(8 * 1024 * 1024 * 1024) // 8GB )
Variables ¶
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var ( // InitialMmapSize is the initial size of the mmapped region. Setting this larger than // the potential max db size can prevent writer from blocking reader. // This only works for linux. InitialMmapSize = int64(10 * 1024 * 1024 * 1024) )
Functions ¶
func NewDefaultTmpBackend ¶
func NewDefaultTmpBackend() (*backend, string)
Types ¶
type Backend ¶
type Backend interface {
BatchTx() BatchTx
Snapshot() Snapshot
Hash() (uint32, error)
// Size returns the current size of the backend.
Size() int64
Defrag() error
ForceCommit()
Close() error
}
func NewDefaultBackend ¶
type BatchTx ¶
type BatchTx interface {
Lock()
Unlock()
UnsafeCreateBucket(name []byte)
UnsafePut(bucketName []byte, key []byte, value []byte)
UnsafeSeqPut(bucketName []byte, key []byte, value []byte)
UnsafeRange(bucketName []byte, key, endKey []byte, limit int64) (keys [][]byte, vals [][]byte)
UnsafeDelete(bucketName []byte, key []byte)
UnsafeForEach(bucketName []byte, visitor func(k, v []byte) error) error
Commit()
CommitAndStop()
}
Source Files
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