Binary Formats¶
Though JSON is a ubiquitous data format, it is not a very compact format suitable for data exchange, for instance over a network. Hence, the library supports
- BJData (Binary JData),
- BSON (Binary JSON),
- CBOR (Concise Binary Object Representation),
- MessagePack, and
- UBJSON (Universal Binary JSON)
to efficiently encode JSON values to byte vectors and to decode such vectors.
Comparison¶
Completeness¶
| Format | Serialization | Deserialization |
|---|---|---|
| BJData | complete | complete |
| BSON | incomplete: top-level value must be an object | incomplete, but all JSON types are supported |
| CBOR | complete | incomplete, but all JSON types are supported |
| MessagePack | complete | complete |
| UBJSON | complete | complete |
Binary values¶
| Format | Binary values | Binary subtypes |
|---|---|---|
| BJData | not supported | not supported |
| BSON | supported | supported |
| CBOR | supported | supported |
| MessagePack | supported | supported |
| UBJSON | not supported | not supported |
See binary values for more information.
Sizes¶
| Format | canada.json | twitter.json | citm_catalog.json | jeopardy.json |
|---|---|---|---|---|
| BJData | 53.2 % | 91.1 % | 78.1 % | 96.6 % |
| BJData (size) | 58.6 % | 92.1 % | 86.7 % | 97.4 % |
| BJData (size+tyoe) | 58.6 % | 92.1 % | 86.5 % | 97.4 % |
| BSON | 85.8 % | 95.2 % | 95.8 % | 106.7 % |
| CBOR | 50.5 % | 86.3 % | 68.4 % | 88.0 % |
| MessagePack | 50.5 % | 86.0 % | 68.5 % | 87.9 % |
| UBJSON | 53.2 % | 91.3 % | 78.2 % | 96.6 % |
| UBJSON (size) | 58.6 % | 92.3 % | 86.8 % | 97.4 % |
| UBJSON (size+type) | 55.9 % | 92.3 % | 85.0 % | 95.0 % |
Sizes compared to minified JSON value.