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,,,,,,,,,,,,,,,, (info)
Dependencies base (>1 && <1), 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
Revised Revision 1 made by HerbertValerioRiedel at Thu Dec 1 18:46:29 UTC 2016
Category Data
Home page https://github.com/chadaustin/buffer-builder
Uploaded by chadaustin at Sun Feb 22 01:29:27 UTC 2015
Distributions LTSHaskell:, NixOS:, Stackage:
Downloads 4804 total (195 in the last 30 days)
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Status Docs not available [build log]
All reported builds failed as of 2016-12-01 [all 6 reports]
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  • Data
    • Data.BufferBuilder
      • Data.BufferBuilder.Json
      • Data.BufferBuilder.Utf8


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