xenial (7) mtbl.7.gz

Provided by: libmtbl-dev_0.8.0-1_amd64 bug

NAME

       mtbl - immutable sorted string library

SYNOPSIS

       #include <mtbl.h>

       gcc [flags] files -lmtbl [libraries]

DESCRIPTION

       The mtbl library provides interfaces for creating, searching, and merging Sorted String Table (SSTable)
       files in the MTBL format, which provide an immutable mapping of keys to values. Sorted String Tables are
       compact and provide fast random access to keys and key ranges. Keys and values are arbitrary byte arrays,
       and MTBL SSTables may not contain duplicate keys.

       The six main interfaces provided by the mtbl library are:

       mtbl_iter(3)
           Iterator objects provide a consistent interface for iterating over the key-value entries returned by
           other interfaces.

       mtbl_source(3)
           Source objects provide functions for obtaining iterators from an underlying data source. The
           mtbl_reader and mtbl_merger interfaces provide functions for obtaining references to a source object.
           The source methods return an mtbl_iter object.

       mtbl_reader(3)
           Reader objects provide read-only access to MTBL files.

       mtbl_writer(3)
           Writer objects initialize a new MTBL file from a sequence of key-value entries provided by the
           caller. Keys must be in sorted order based on lexicographical byte value, and keys may not be
           duplicated.

       mtbl_merger(3)
           Merger objects receive multiple sequences of key-value entries from one or more mtbl_source objects
           and combine them into a single, sorted sequence. The combined, merged output sequence is provided via
           the mtbl_source interface.

       mtbl_sorter(3)
           Sorter objects receive a sequence of key-value entries provided by the caller and return them in
           sorted order. The caller must provide a callback function to merge values in the case of entries with
           duplicate keys. The sorted output sequence may be retrieved via the mtbl_iter interface or be dumped
           to an mtbl_writer object.

       mtbl_fileset(3)
           Fileset objects automatically maintain an mtbl_source built on top of the mtbl_merger and mtbl_reader
           interfaces. The set of underlying mtbl_reader objects is kept synchronized with a "setfile" on disk
           listing MTBL files.

       Additionally, several utility interfaces are provided:

       mtbl_crc32c(3)
           Calculates the CRC32C checksum of a byte array.

       mtbl_fixed(3)
           Functions for fixed-width encoding and decoding of 32 and 64 bit integers.

       mtbl_varint(3)
           Functions for varint encoding and decoding of 32 and 64 bit integers.

                                                   01/31/2014                                            MTBL(7)