Command testresize is a utility used by the lmdbsync tests to validate its multiprocessing capabilities.

ExponentialBackoff returns a function that delays each attempt by random number between 0 and the minimum of max and base*factor^attempt.

MapFullHandler returns a Handler that retries updates which failed to commit due to lmdb.MapFull errors.

MapResizedHandler returns a Handler that transparently adopts map sizes set by external processes and retries any transactions that failed to start because of lmdb.MapResized.

NewEnv returns an newly allocated Env that wraps env.

ErrTxnRetry is returned by a Handler to have the Env retry the transaction.

MapResizedDefaultDelay is the default DelayFunc when MapResizedHandler is passed a nil value.

MapResizedDefaultRetry is the default number of attempts MapResizedHandler will make adopt a new map size when lmdb.MapResized is encountered repeatedly.

Env wraps an *lmdb.Env, receiving all the same methods and proxying some to provide transaction management.

Handler can intercept errors returned by a transaction and handle them in an application-specific way, including by resizing the environment and retrying the transaction by returning ErrTxnRetry.

TxnRunner is an interface for types that can run lmdb transactions.

DelayFunc takes as input the number of previous attempts and returns the delay before making another attempt.

HandlerChain is a Handler implementation that iteratively calls each handler in the underlying slice when handling an error.

MapFullFunc is a function for resizing a memory map after it has become full.