aeson: Fast JSON parsing and generation

[ bsd3, json, library, text, web ] [ Propose Tags ]

A JSON parsing and generation library optimized for ease of use and high performance.

Parsing performance with GHC 6.12.3 on a late 2010 MacBook Pro (2.66GHz Core i7), for mostly-English tweets from Twitter's JSON search API:

English, 854 bytes: 29029 msg/sec (23.6 MB/sec)
English, 6.4 KB: 6407 msg/sec (40.3 MB/sec)
English, 31.2 KB: 1265 msg/sec (38.8 MB/sec)
English, 61.5 KB: 585 msg/sec (35.2 MB/sec)

Handling heavily-escaped text is a little more work. Here is parsing performance with Japanese tweets, where much of the text is entirely Unicode-escaped:

Japanese, 14.6 KB: 2227 msg/sec (31.9 MB/sec)
Japanese, 44.1 KB: 671 msg/sec (29.6 MB/sec)

Encoding performance on the same machine and data:

English, 854 bytes: 43439 msg/sec (35.4 MB/sec)
English, 6.4 KB: 7127 msg/sec (44.8 MB/sec)
Engish, 61.5 KB: 765 msg/sec (46.0 MB/sec)
Japanese, 14.6 KB: 4727 msg/sec (67.5 MB/sec)
Japanese, 44.1 KB: 1505 msg/sec (64.8 MB/sec)

With GHC 7.0.2, the story is mixed: parsing is 20-40% slower than GHC 6.12.3, while encoding performance ranges from about the same to twice as fast (on numeric data).

(A note on naming: in Greek mythology, Aeson was the father of Jason.)

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Versions [RSS] [faq]	0.1.0.0, 0.2.0.0, 0.3.0.0, 0.3.1.0, 0.3.1.1, 0.3.2.0, 0.3.2.1, 0.3.2.2, 0.3.2.3, 0.3.2.4, 0.3.2.5, 0.3.2.6, 0.3.2.7, 0.3.2.8, 0.3.2.9, 0.3.2.10, 0.3.2.11, 0.3.2.12, 0.3.2.13, 0.3.2.14, 0.4.0.0, 0.4.0.1, 0.5.0.0, 0.6.0.0, 0.6.0.1, 0.6.0.2, 0.6.1.0, 0.6.2.0, 0.6.2.1, 0.7.0.0, 0.7.0.1, 0.7.0.2, 0.7.0.3, 0.7.0.4, 0.7.0.5, 0.7.0.6, 0.8.0.0, 0.8.0.1, 0.8.0.2, 0.8.1.0, 0.8.1.1, 0.9.0.0, 0.9.0.1, 0.10.0.0, 0.11.0.0, 0.11.1.0, 0.11.1.1, 0.11.1.2, 0.11.1.3, 0.11.1.4, 0.11.2.0, 0.11.2.1, 0.11.3.0, 1.0.0.0, 1.0.1.0, 1.0.2.0, 1.0.2.1, 1.1.0.0, 1.1.1.0, 1.1.2.0, 1.2.0.0, 1.2.1.0, 1.2.2.0, 1.2.3.0, 1.2.4.0, 1.3.0.0, 1.3.1.0, 1.3.1.1, 1.4.0.0, 1.4.1.0, 1.4.2.0, 1.4.3.0, 1.4.4.0, 1.4.5.0, 1.4.6.0, 1.4.7.0, 1.4.7.1, 1.5.0.0, 1.5.1.0, 1.5.2.0, 1.5.3.0, 1.5.4.0, 1.5.4.1, 1.5.5.0, 1.5.5.1, 1.5.6.0 (info)
Dependencies	attoparsec (>=0.8.5.0), base (==4.), blaze-builder (>=0.2.1.4), bytestring, bytestring-show, containers, deepseq (<1.2), ghc-prim, hashable, integer (==0.1.), integer-gmp, monads-fd, old-locale, syb, text (>=0.11.0.2), time, unordered-containers (>=0.1.2.0), vector (>=0.7) [details]
License	BSD-3-Clause
Copyright	Copyright 2011 MailRank, Inc.
Author	Bryan O'Sullivan <bos@mailrank.com>
Maintainer	Bryan O'Sullivan <bos@mailrank.com>
Revised	Revision 1 made by phadej at 2015-11-11T14:11:16Z
Category	Text, Web, JSON
Home page	http://github.com/mailrank/aeson
Bug tracker	http://github.com/mailrank/aeson/issues
Source repo	head: git clone http://github.com/mailrank/aeson head: hg clone http://bitbucket.org/bos/aeson
Uploaded	by BryanOSullivan at 2011-03-22T06:05:56Z
Distributions	Arch:1.5.6.0, Debian:1.3.1.1, Fedora:1.4.7.1, FreeBSD:0.8.0.2, LTSHaskell:1.5.6.0, NixOS:1.5.6.0, Stackage:1.5.6.0, openSUSE:1.5.4.0
Downloads	526095 total (4719 in the last 30 days)
Rating	2.75 (votes: 36) [estimated by Bayesian average]
Your Rating	λ λ λ
Status	Docs uploaded by user Build status unknown [no reports yet]

Modules

[Index]

Data
- Data.Aeson

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