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ijlijl
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2.0.5
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‎CHANGELOG.md‎

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# Changelog
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## 2.0.5 - 2019-04-
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### Fixed
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- Fix inaccuracy in deserializing some `float` values, e.g.,
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31.245270191439438 was parsed to 31.24527019143944. Serialization was
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unaffected.
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## 2.0.4 - 2019-04-02
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### Changed
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- `orjson.dumps()` now serializes `datetime.datetime` objects without a
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`tzinfo` rather than raising `JSONEncodeError`.
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‎Cargo.lock‎

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‎Cargo.toml‎

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[package]
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name = "orjson"
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version = "2.0.4"
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version = "2.0.5"
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authors = ["ijl <ijl@mailbox.org>"]
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description = "Fast, correct Python JSON library"
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edition = "2018"

‎README.md‎

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interoperability tests.
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Its serialization performance is 2x to 3x the nearest
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other library and 4.5x to 11.5x the standard library. Its deserialization
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performance is 0.95x to 1.1x the nearest other library and 1.2x to 3x
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other library and 4x to 12x the standard library. Its deserialization
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performance is 0.9x to 1.1x the nearest other library and 1.1x to 2x
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the standard library.
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It differs in behavior from other Python JSON libraries in supporting
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JSONEncodeError: Integer exceeds 53-bit max
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```
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### float
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orjson serializes and deserializes float values in a consistent way. The
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same behavior is observed in rapidjson, simplejson, and json. ujson is
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inaccurate in both serialization and deserialization.
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### UTF-8
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orjson raises an exception on invalid UTF-8. This is
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| Library | Median latency (milliseconds) | Operations per second | Relative (latency) |
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|------------|---------------------------------|-------------------------|----------------------|
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| orjson | 0.49 | 2038.2 | 1 |
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| ujson | 1.41 | 709.1 | 2.87 |
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| rapidjson | 1.57 | 636.4 | 3.2 |
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| simplejson | 2.69 | 370.5 | 5.49 |
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| json | 2.6 | 384.6 | 5.3 |
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| orjson | 0.54 | 1854.5 | 1 |
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| ujson | 1.47 | 678.3 | 2.73 |
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| rapidjson | 1.58 | 634 | 2.92 |
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| simplejson | 2.7 | 369.3 | 5.01 |
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| json | 2.45 | 407.7 | 4.55 |
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#### twitter.json deserialization
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| Library | Median latency (milliseconds) | Operations per second | Relative (latency) |
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|------------|---------------------------------|-------------------------|----------------------|
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| orjson | 2.46 | 403.8 | 1 |
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| ujson | 2.27 | 443 | 0.92 |
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| rapidjson | 3.11 | 320.1 | 1.26 |
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| simplejson | 2.48 | 401.9 | 1.01 |
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| json | 2.85 | 350.8 | 1.16 |
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| orjson | 2.6 | 384.4 | 1 |
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| ujson | 2.33 | 427.2 | 0.89 |
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| rapidjson | 3.09 | 322 | 1.19 |
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| simplejson | 2.61 | 381.5 | 1 |
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| json | 2.91 | 342.1 | 1.12 |
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#### github.json serialization
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| Library | Median latency (milliseconds) | Operations per second | Relative (latency) |
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|------------|---------------------------------|-------------------------|----------------------|
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| orjson | 0.05 | 18670.2 | 1 |
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| ujson | 0.14 | 7136.1 | 2.61 |
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| rapidjson | 0.16 | 6384.5 | 2.92 |
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| simplejson | 0.31 | 3192.2 | 5.82 |
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| json | 0.27 | 3623 | 5.12 |
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| orjson | 0.06 | 16532.4 | 1 |
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| ujson | 0.14 | 6990.6 | 2.35 |
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| rapidjson | 0.16 | 6236.3 | 2.65 |
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| simplejson | 0.31 | 3234.9 | 5.1 |
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| json | 0.25 | 3943.4 | 4.19 |
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#### github.json deserialization
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| Library | Median latency (milliseconds) | Operations per second | Relative (latency) |
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|------------|---------------------------------|-------------------------|----------------------|
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| orjson | 0.2 | 4988.3 | 1 |
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| ujson | 0.22 | 4525.8 | 1.11 |
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| rapidjson | 0.27 | 3698.6 | 1.35 |
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| simplejson | 0.23 | 4371.5 | 1.14 |
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| json | 0.24 | 4114.8 | 1.21 |
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| orjson | 0.23 | 4395.8 | 1 |
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| ujson | 0.23 | 4431.2 | 0.99 |
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| rapidjson | 0.27 | 3746.8 | 1.18 |
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| simplejson | 0.22 | 4652.8 | 0.95 |
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| json | 0.25 | 3991.5 | 1.11 |
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#### citm_catalog.json serialization
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| Library | Median latency (milliseconds) | Operations per second | Relative (latency) |
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|------------|---------------------------------|-------------------------|----------------------|
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| orjson | 0.79 | 1261.8 | 1 |
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| ujson | 2.61 | 381.6 | 3.31 |
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| rapidjson | 2.48 | 402.4 | 3.14 |
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| simplejson | 9.93 | 100.7 | 12.59 |
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| json | 5.81 | 172 | 7.37 |
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| orjson | 0.81 | 1232 | 1 |
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| ujson | 2.78 | 359.1 | 3.43 |
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| rapidjson | 2.59 | 386 | 3.19 |
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| simplejson | 10.53 | 95.2 | 12.98 |
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| json | 5.41 | 184.7 | 6.67 |
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#### citm_catalog.json deserialization
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| Library | Median latency (milliseconds) | Operations per second | Relative (latency) |
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|------------|---------------------------------|-------------------------|----------------------|
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| orjson | 4.45 | 224.7 | 1 |
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| ujson | 4.35 | 229.8 | 0.98 |
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| rapidjson | 5.52 | 181.7 | 1.24 |
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| simplejson | 6.11 | 163.1 | 1.37 |
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| json | 6.02 | 165.6 | 1.35 |
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| orjson | 4.76 | 210.1 | 1 |
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| ujson | 4.39 | 228 | 0.92 |
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| rapidjson | 5.79 | 174.9 | 1.22 |
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| simplejson | 6.1 | 163.8 | 1.28 |
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| json | 6.03 | 165.7 | 1.27 |
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#### canada.json serialization
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| Library | Median latency (milliseconds) | Operations per second | Relative (latency) |
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|------------|---------------------------------|-------------------------|----------------------|
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| orjson | 4.21 | 237.7 | 1 |
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| ujson | 8.42 | 118.4 | 2 |
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| rapidjson | 43.17 | 23.2 | 10.27 |
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| simplejson | 62.6 | 16 | 14.89 |
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| json | 47.93 | 20.9 | 11.4 |
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| orjson | 3.95 | 252.1 | 1 |
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| ujson | | | |
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| rapidjson | 44.17 | 22.6 | 11.18 |
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| simplejson | 64.52 | 15.5 | 16.33 |
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| json | 47.01 | 21.3 | 11.9 |
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#### canada.json deserialization
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| Library | Median latency (milliseconds) | Operations per second | Relative (latency) |
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|------------|---------------------------------|-------------------------|----------------------|
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| orjson | 8.56 | 116.3 | 1 |
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| ujson | 8.24 | 121.5 | 0.96 |
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| rapidjson | 29.05 | 34.4 | 3.39 |
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| simplejson | 26.85 | 37 | 3.14 |
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| json | 27.45 | 36.4 | 3.21 |
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| orjson | 14.76 | 67.8 | 1 |
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| ujson | | | |
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| rapidjson | 29.01 | 34.5 | 1.97 |
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| simplejson | 26.75 | 37.4 | 1.81 |
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| json | 27.18 | 36.8 | 1.84 |
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If a row is blank, the library did not serialize and deserialize the fixture without
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modifying it, e.g., returning different values for floating point numbers.
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This was measured using Python 3.7.2 on Linux with orjson 2.0.3, ujson 1.35,
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This was measured using Python 3.7.3 on Linux with orjson 2.0.5, ujson 1.35,
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python-rapidson 0.7.0, and simplejson 3.16.0.
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The results can be reproduced using the `pybench` and `graph` scripts.

‎doc/canada_deserialization.png‎

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‎doc/canada_serialization.png‎

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‎doc/citm_catalog_deserialization.png‎

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‎doc/citm_catalog_serialization.png‎

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‎doc/github_deserialization.png‎

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‎doc/github_serialization.png‎

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