On Thursday, 23 October 2025 at 01:50:55 UTC, Hipreme wrote:
Hey folks! I've decided to release HipJSON because this
dependency is being used frequently in both Hipreme Engine and
Redub, and the main difference is that it uses highly optimized
data structures inside it:
- StringBuffer so all the string allocations are linear
- [D Segmented
Hashmap](https://code.dlang.org/packages/d-segmented-hashmap):
A hashmap which does not require rehashing, thus making it the
fastest solution possible for a JSON parser
- JSONArray which makes smart use of stack memory and promotion
to dynamic memory on demand
It is the only JSON parser in D I saw being faster than the one
present in JavaScript which I think it is a good benchmark as
JSON is super important for web. Here are some stats comparison
for some common JSON libraries:
```
STD JSON: 336 ms, 836 μs, and 6 hnsecs (50000 Tests)
JSONPIPE: 206 ms and 571 μs (50000 Tests)
MIR JSON: 266 ms, 770 μs, and 7 hnsecs (50000 Tests)
HipJSON: 86 ms, 881 μs, and 8 hnsecs (50000 Tests)
```
Hi,
I have added proper Mir tests.
Otherwise, the benchmark is misleading: Mir ASDF is a few times
faster.
https://github.com/MrcSnm/hipjson/pull/1
#### Target = Apple M4
```
STD JSON: 340 ms, 500 μs, and 7 hnsecs (50000 Tests)
JSONPIPE: 239 ms and 89 μs (50000 Tests)
Mir Ion Algebraic: 234 ms, 974 μs, and 3 hnsecs (50000 Tests)
Mir Ion Amazon : 98 ms, 492 μs, and 8 hnsecs (50000 Tests)
Mir ASDF : 22 ms, 389 μs, and 9 hnsecs (50000 Tests)
HipJSON: 85 ms, 877 μs, and 9 hnsecs (50000 Tests)
```
For a sophisticated JSON benchmark you may want to add it to
https://github.com/kostya/benchmarks
