Package index • mdbx

Environments

Opening, closing and inspecting the file that holds the data.

mdbx_env_open(): Open an MDBX environment
mdbx_env_close(): Close an MDBX environment
mdbx_env_is_open(): Is an MDBX environment still open?
mdbx_env_stat(): Database statistics
mdbx_env_info(): Environment information
mdbx_limits(): Size limits imposed by 'libmdbx'
mdbx_env_reader_check(): Reclaim reader slots from processes that died

Transactions

Every read and write happens inside one. The with_* helpers cover most uses; the rest are for driving a transaction by hand.

mdbx_with_write() mdbx_with_read(): Run code inside a transaction
mdbx_txn_begin(): Begin a transaction
mdbx_txn_commit(): Commit a transaction
mdbx_txn_abort(): Abort a transaction
mdbx_txn_state(): State of a transaction

Reading and writing

mdbx_get(): Read a value
mdbx_put(): Write a value
mdbx_del(): Delete a key

Named databases

An environment can hold several independent key spaces; the unnamed main database is the default everywhere.

mdbx_dbi_open(): Open a named database
mdbx_dbi_drop(): Empty or delete a named database
mdbx_dbi_list(): List the named databases in an environment
mdbx_dbi_sequence(): A database's sequence counter
mdbx_keys(): List the keys in a database
mdbx_items(): List the keys and values in a database
mdbx_scan_max: Largest scan mdbx_keys() and mdbx_items() will do unasked

Durability and flags

Every commit is durable by default; these trade that for speed.

mdbx_flags(): Flags accepted by 'libmdbx'
mdbx_env_get_flags(): Flags an environment is using
mdbx_env_set_flags(): Change an environment's flags
mdbx_env_sync(): Flush an environment to disk

About the package

mdbx mdbx-package: mdbx: Bindings to the 'libmdbx' Embedded Key-Value Store
mdbx-concurrency: Concurrency in mdbx
mdbx-errors: Errors raised by mdbx
mdbx_version(): Version of the bundled libmdbx