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64 lines
3.9 KiB
Markdown
64 lines
3.9 KiB
Markdown
# Binary Formats
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Though JSON is a ubiquitous data format, it is not a very compact format suitable for data exchange, for instance, over
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a network. Hence, the library supports
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- [BJData](bjdata.md) (Binary JData),
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- [BON8](bon8.md) (Binary Object Notation 8),
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- [BSON](bson.md) (Binary JSON),
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- [CBOR](cbor.md) (Concise Binary Object Representation),
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- [MessagePack](messagepack.md), and
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- [UBJSON](ubjson.md) (Universal Binary JSON)
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to efficiently encode JSON values to byte vectors and to decode such vectors.
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## Comparison
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### Completeness
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| Format | Serialization | Deserialization |
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|-------------|-----------------------------------------------|----------------------------------------------|
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| BJData | complete | complete |
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| BON8 | incomplete: no unsigned integers above int64 | complete |
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| BSON | incomplete: top-level value must be an object | incomplete, but all JSON types are supported |
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| CBOR | complete | incomplete, but all JSON types are supported |
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| MessagePack | complete | complete |
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| UBJSON | complete | complete |
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### Binary values
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| Format | Binary values | Binary subtypes |
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|-------------|---------------|-----------------|
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| BJData | not supported | not supported |
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| BON8 | not supported | not supported |
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| BSON | supported | supported |
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| CBOR | supported | supported |
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| MessagePack | supported | supported |
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| UBJSON | not supported | not supported |
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See [binary values](../binary_values.md) for more information.
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### Sizes
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| Format | canada.json | twitter.json | citm_catalog.json | jeopardy.json |
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|--------------------|-------------|--------------|-------------------|---------------|
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| BJData | 53.2 % | 91.1 % | 78.1 % | 96.6 % |
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| BJData (size) | 58.6 % | 92.1 % | 86.7 % | 97.4 % |
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| BJData (size+type) | 58.6 % | 92.1 % | 86.5 % | 97.4 % |
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| BON8 | **50.5 %** | **83.8 %** | **63.5 %** | **87.5 %** |
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| BSON | 85.8 % | 95.2 % | 95.8 % | 106.7 % |
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| CBOR | **50.5 %** | 86.3 % | 68.4 % | 88.0 % |
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| MessagePack | **50.5 %** | 86.0 % | 68.5 % | 87.9 % |
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| UBJSON | 53.2 % | 91.3 % | 78.2 % | 96.6 % |
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| UBJSON (size) | 58.6 % | 92.3 % | 86.8 % | 97.4 % |
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| UBJSON (size+type) | 55.9 % | 92.3 % | 85.0 % | 95.0 % |
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Sizes compared to minified JSON value; the smallest size per file is printed in bold.
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## See also
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- [Binary values](../binary_values.md) - binary values and subtypes
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- [**to_cbor**](../../api/basic_json/to_cbor.md) / [**from_cbor**](../../api/basic_json/from_cbor.md), [**to_msgpack**](../../api/basic_json/to_msgpack.md) / [**from_msgpack**](../../api/basic_json/from_msgpack.md), [**to_bson**](../../api/basic_json/to_bson.md) / [**from_bson**](../../api/basic_json/from_bson.md), [**to_ubjson**](../../api/basic_json/to_ubjson.md) / [**from_ubjson**](../../api/basic_json/from_ubjson.md), [**to_bjdata**](../../api/basic_json/to_bjdata.md) / [**from_bjdata**](../../api/basic_json/from_bjdata.md), [**to_bon8**](../../api/basic_json/to_bon8.md) / [**from_bon8**](../../api/basic_json/from_bon8.md) - the conversion functions
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- [Parsing untrusted input](../parsing/untrusted_input.md)
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- [SAX interface](../parsing/sax_interface.md) - decode binary formats without building a value
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