A library that provides an embeddable, persistent key-value store for fast storage.
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Arun Sharma 95af128225 SSE4 optimization
Summary:
This speeds up CRC computation significantly on
hardware that supports it. Enabled via -msse4.

Note: the binary won't be usable on older CPUs
that don't support the instruction.

Test Plan: crc32c_test

Reviewers: dhruba

Reviewed By: dhruba

Differential Revision: https://reviews.facebook.net/D3201
2012-05-15 10:10:01 -07:00
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doc Added bloom filter support. 2012-04-17 08:36:46 -07:00
helpers/memenv A number of fixes: 2011-10-31 17:22:06 +00:00
include/leveldb Added bloom filter support. 2012-04-17 08:36:46 -07:00
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fbcode.sh Ability to switch to gcc 4.1.6 and also use jemalloc. Thanks for Chip for large amounts of help. 2012-05-14 22:15:09 -07:00
LICENSE reverting disastrous MOE commit, returning to r21 2011-04-19 23:11:15 +00:00
Makefile Ability to switch to gcc 4.1.6 and also use jemalloc. Thanks for Chip for large amounts of help. 2012-05-14 22:15:09 -07:00
NEWS sync with upstream @ 21409451 2011-05-21 02:17:43 +00:00
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TODO A number of smaller fixes and performance improvements: 2011-06-22 02:36:45 +00:00

leveldb: A key-value store
Authors: Sanjay Ghemawat (sanjay@google.com) and Jeff Dean (jeff@google.com)

The code under this directory implements a system for maintaining a
persistent key/value store.

See doc/index.html for more explanation.
See doc/impl.html for a brief overview of the implementation.

The public interface is in include/*.h.  Callers should not include or
rely on the details of any other header files in this package.  Those
internal APIs may be changed without warning.

Guide to header files:

include/db.h
    Main interface to the DB: Start here

include/options.h
    Control over the behavior of an entire database, and also
    control over the behavior of individual reads and writes.

include/comparator.h
    Abstraction for user-specified comparison function.  If you want
    just bytewise comparison of keys, you can use the default comparator,
    but clients can write their own comparator implementations if they
    want custom ordering (e.g. to handle different character
    encodings, etc.)

include/iterator.h
    Interface for iterating over data. You can get an iterator
    from a DB object.

include/write_batch.h
    Interface for atomically applying multiple updates to a database.

include/slice.h
    A simple module for maintaining a pointer and a length into some
    other byte array.

include/status.h
    Status is returned from many of the public interfaces and is used
    to report success and various kinds of errors.

include/env.h
    Abstraction of the OS environment.  A posix implementation of
    this interface is in util/env_posix.cc

include/table.h
include/table_builder.h
    Lower-level modules that most clients probably won't use directly