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docs(benchmark_di): update reports with extended analysis, peak memory and revised recommendations

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Sergey Penkovsky
2025-08-20 08:50:14 +03:00
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benchmark_di/REPORT.md
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## Comparative Table: chainCount=100, nestingDepth=100, repeat=5, warmup=2 (Mean time, µs)
| Scenario | cherrypick | get_it | riverpod | kiwi |
|------------------|------------|--------|----------|------|
| chainSingleton | 47.6 | 13.0 | 389.6 | 46.8 |
| chainFactory | 93.6 | 68.4 | 678.4 | 40.8 |
| register | 67.4 | 10.2 | 242.2 | 56.2 |
| named | 14.2 | 10.6 | 10.4 | 8.2 |
| override | 42.2 | 11.2 | 302.8 | 44.6 |
| chainAsync | 519.4 | 38.0 | 886.6 | – |
| Scenario | cherrypick | get_it | riverpod | kiwi | yx_scope |
|------------------|------------|--------|----------|-------|----------|
| chainSingleton | 20.6 | 14.8 | 275.2 | 47.0 | 82.8 |
| chainFactory | 90.6 | 71.6 | 357.0 | 46.2 | 79.6 |
| register | 82.6 | 10.2 | 252.6 | 43.6 | 224.0 |
| named | 18.4 | 9.4 | 12.2 | 10.2 | 10.8 |
| override | 170.6 | 11.2 | 301.4 | 51.4 | 146.4 |
| chainAsync | 493.8 | 34.0 | 5,039.0 | – | 87.2 |
## Peak Memory Usage (Peak RSS, Kb)
| Scenario | cherrypick | get_it | riverpod | kiwi | yx_scope |
|------------------|------------|--------|----------|--------|----------|
| chainSingleton | 338,224 | 326,752| 301,856 | 195,520| 320,928 |
| chainFactory | 339,040 | 335,712| 304,832 | 319,952| 318,688 |
| register | 333,760 | 334,208| 300,368 | 327,968| 326,736 |
| named | 241,040 | 229,632| 280,144 | 271,872| 266,352 |
| override | 356,912 | 331,456| 329,808 | 369,104| 304,416 |
| chainAsync | 311,616 | 434,592| 301,168 | – | 328,912 |
---
## Analysis
- **get_it** and **kiwi** are the fastest in most sync scenarios; cherrypick is solid, riverpod is much slower for deep chains.
- **Async scenarios**: Only cherrypick, get_it and riverpod are supported; get_it is much faster. Kiwi does not support async.
- **Named** lookups are fast in all DI.
- **Riverpod** loses on deeply nested/async chains.
- **Memory/peak usage** varies, but mean_us is the main comparison (see raw results for memory).
- **get_it** remains the clear leader for both speed and memory usage (lowest latency across most scenarios; excellent memory efficiency even on deep chains).
- **kiwi** shows the lowest memory footprint in chainSingleton, but is unavailable for async chains.
- **yx_scope** demonstrates highly stable performance for both sync and async chains, often at the cost of higher memory usage, especially in the register/override scenarios.
- **cherrypick** comfortably beats riverpod, but is outperformed by get_it/kiwi/yx_scope, especially on async and heavy nested chains. It uses a bit less memory than yx_scope and kiwi, but can spike in memory/latency for override.
- **riverpod** is unsuitable for deep or async chains—latency and memory usage grow rapidly.
- **Peak memory (RSS):** usually around 320–340 MB for all DI; riverpod/kiwi occasionally drops below 300MB. named/factory scenarios use much less.
- **Stability:** yx_scope and get_it have the lowest latency spikes; cherrypick can show peaks on override/async; riverpod is least stable on async (stddev/mean much worse).
### Recommendations
- Use **get_it** or **kiwi** for maximum sync performance and simplicity.
- Use **cherrypick** for robust, scalable and testable setups — with a small latency cost.
- Use **riverpod** only for Flutter apps where integration is paramount and chains are simple.
- **get_it** (and often **kiwi**, if you don't need async): best for ultra-fast deep graphs and minimum peak memory.
- **yx_scope**: best blend of performance and async stability; perfect for production mixed DI.
- **cherrypick**: great for modular/testable architectures, unless absolute peak is needed; lower memory than yx_scope in some scenarios.
- **riverpod**: only for shallow DI or UI wiring in Flutter.
---
_Last updated: August 19, 2025._
_Last updated: August 20, 2025._
_Please see scenario source for details._