aeson: Fast JSON parsing and encoding
A JSON parsing and encoding library optimized for ease of use and high performance.
To get started, see the documentation for the Data.Aeson
module
below.
For release notes, see https://github.com/bos/aeson/blob/master/release-notes.markdown
Note: if you use GHCi or Template Haskell, please see the
README
file for important details about building this package,
and other packages that depend on it:
https://github.com/bos/aeson#readme
Parsing performance on a late 2010 MacBook Pro (2.66GHz Core i7), for mostly-English tweets from Twitter's JSON search API:
0.8 KB, 32-bit GHC 6.12.3: 30538 msg/sec (24.9 MB/sec)
0.8 KB, 64-bit GHC 7.0.3: 31204 msg/sec (25.4 MB/sec)
6.4 KB, 32-bit GHC 6.12.3: 6731 msg/sec (42.3 MB/sec)
6.4 KB, 64-bit GHC 7.0.3: 6627 msg/sec (41.7 MB/sec)
11.8 KB, 32-bit GHC 6.12.3: 3751 msg/sec (43.2 MB/sec)
11.8 KB, 64-bit GHC 7.0.3: 3381 msg/sec (38.9 MB/sec)
31.2 KB, 32-bit GHC 6.12.3: 1306 msg/sec (39.8 MB/sec)
31.2 KB, 64-bit GHC 7.0.3: 1132 msg/sec (34.5 MB/sec)
61.5 KB, 32-bit GHC 6.12.3: 616 msg/sec (37.0 MB/sec)
61.5 KB, 64-bit GHC 7.0.3: 534 msg/sec (32.1 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.
14.6 KB, 32-bit GHC 6.12.3: 2315 msg/sec (33.1 MB/sec)
14.6 KB, 64-bit GHC 7.0.3: 1986 msg/sec (28.4 MB/sec)
44.1 KB, 32-bit GHC 6.12.3: 712 msg/sec (30.7 MB/sec)
44.1 KB, 64-bit GHC 7.0.3: 634 msg/sec (27.3 MB/sec)
82.9 KB, 32-bit GHC 6.12.3: 377 msg/sec (30.5 MB/sec)
82.9 KB, 64-bit GHC 7.0.3: 332 msg/sec (26.9 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)
(A note on naming: in Greek mythology, Aeson was the father of Jason.)
[Skip to Readme]
Modules
[Index]
Flags
Automatic Flags
Name | Description | Default |
---|---|---|
developer | operate in developer mode | Disabled |
Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info
Downloads
- aeson-0.5.0.0.tar.gz [browse] (Cabal source package)
- Package description (revised from the package)
Note: This package has metadata revisions in the cabal description newer than included in the tarball. To unpack the package including the revisions, use 'cabal get'.
Maintainer's Corner
For package maintainers and hackage trustees
Candidates