buffer-builder: Library for efficiently building up buffers, one piece at a time

[ bsd3, data, library ] [ Propose Tags ]

Data.BufferBuilder is an efficient library for incrementally building up ByteStrings, one chunk at a time. Early benchmarks show it is over twice as fast as ByteString Builder, primarily because BufferBuilder is built upon an ST-style restricted monad and mutable state instead of ByteString Builder's monoidal AST.

Internally, BufferBuilder is backed by a few C functions. Examination of GHC's output shows nearly optimal code generation with no intermediate thunks -- and thus, continuation passing and its associated indirect jumps and stack traffic only occur when BufferBuilder is asked to append a non-strict ByteString.

I benchmarked four approaches with a URL encoding benchmark:

Using BufferBuilder is very simple:

import qualified Data.BufferBuilder as BB

let byteString = BB.runBufferBuilder $ do
      BB.appendBS "http"
      BB.appendChar8 '/'
      BB.appendBS "//"

This package also provides Data.BufferBuilder.Utf8 for generating UTF-8 buffers and Data.BufferBuilder.Json for encoding data structures into JSON.

Versions 0.1.0.0, 0.2.0.0, 0.2.0.1, 0.2.0.2, 0.2.0.3, 0.2.1.0, 0.2.2.0, 0.2.2.1, 0.2.2.2, 0.2.3.0, 0.2.4.0, 0.2.4.1, 0.2.4.2, 0.2.4.3, 0.2.4.4, 0.2.4.5 (info)
Change log changelog.md
Dependencies base (==4.*), bytestring, mtl, text, unordered-containers, vector [details]
License BSD-3-Clause
Copyright IMVU Inc., Chad Austin, Andy Friesen
Author Chad Austin, Andy Friesen
Maintainer chad@chadaustin.me
Category Data
Home page https://github.com/chadaustin/buffer-builder
Uploaded by chadaustin at Thu Dec 17 17:31:04 UTC 2015
Distributions LTSHaskell:0.2.4.5, NixOS:0.2.4.5, Stackage:0.2.4.5, openSUSE:0.2.4.5
Downloads 4510 total (41 in the last 30 days)
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Status Docs available [build log]
Last success reported on 2015-12-17 [all 1 reports]
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