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https://github.com/pese-git/cherrypick.git
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80 lines
4.2 KiB
Markdown
80 lines
4.2 KiB
Markdown
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# DI Benchmark Results: cherrypick vs get_it
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## Benchmark parameters
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| Parameter | Value |
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|------------------|-----------------------|
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| --benchmark | all |
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| --chainCount (-c)| 10, 100 |
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| --nestingDepth (-d)| 10, 100 |
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| --repeat (-r) | 2 |
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| --warmup (-w) | 1 (default) |
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| --format (-f) | markdown |
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| --di | cherrypick, get_it |
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---
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## Benchmark scenarios
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**(1) RegisterSingleton**
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Registers and resolves a singleton. Baseline DI speed.
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**(2) ChainSingleton**
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A dependency chain A → B → ... → N (singleton). Measures how fast DI resolves deep singleton chains by name.
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**(3) ChainFactory**
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Same as ChainSingleton, but every chain element is a factory. Shows DI speed for stateless 'creation chain'.
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**(4) AsyncChain**
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Async chain (async factory). Measures DI performance for async graphs.
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**(5) Named**
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Registers two bindings with names ("impl1", "impl2"), resolves by name. Tests named lookup.
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**(6) Override**
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Registers a chain/alias in a child scope and resolves UniversalService without a name in that scope. Simulates override and modular/test architecture.
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---
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## Comparative Table (Mean, ΔRSS), chainCount=10, nestingDepth=10
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| Scenario | cherrypick Mean (us) | cherrypick ΔRSS | get_it Mean (us) | get_it ΔRSS |
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|--------------------|---------------------:|----------------:|-----------------:|------------:|
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| RegisterSingleton | 21.0 | 320 | 24.5 | 80 |
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| ChainSingleton | 112.5 | -3008 | 2.0 | 304 |
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| ChainFactory | 8.0 | 0 | 4.0 | 0 |
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| AsyncChain | 36.5 | 0 | 13.5 | 0 |
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| Named | 1.5 | 0 | 0.5 | 0 |
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| Override | 27.5 | 0 | 0.0 | 0 |
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## Maximum load: chainCount=100, nestingDepth=100
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| Scenario | cherrypick Mean (us) | cherrypick ΔRSS | get_it Mean (us) | get_it ΔRSS |
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|--------------------|---------------------:|----------------:|-----------------:|------------:|
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| RegisterSingleton | 1.0 | 32 | 1.0 | 0 |
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| ChainSingleton | 3884.0 | 0 | 1.5 | 34848 |
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| ChainFactory | 4088.0 | 0 | 50.0 | 12528 |
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| AsyncChain | 4287.0 | 0 | 17.0 | 63120 |
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| Named | 1.0 | 0 | 0.0 | 0 |
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| Override | 4767.5 | 0 | 1.5 | 14976 |
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---
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## Scenario explanations
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- **RegisterSingleton:** Registers and resolves a singleton dependency, baseline test for cold/hot startup speed.
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- **ChainSingleton:** Deep chain of singleton dependencies. Cherrypick is much slower as depth increases; get_it is nearly unaffected.
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- **ChainFactory:** Creation chain with new instances per resolve. get_it generally faster on large chains due to ultra-simple factory registration.
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- **AsyncChain:** Async factory chain. get_it processes async resolutions much faster; cherrypick is much slower as depth increases due to async handling.
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- **Named:** Both DI containers resolve named bindings nearly instantly, even on large graphs.
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- **Override:** Child scope override. get_it (thanks to stack-based scopes) resolves immediately; cherrypick supports modular testing with controlled memory use.
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## Summary
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- **get_it** demonstrates impressive speed and low overhead across all scenarios and loads, but lacks diagnostics, advanced scopes, and cycle detection.
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- **cherrypick** is ideal for complex, multi-layered, production or testable architectures where scope, overrides, and diagnostics are critical. Predictably slower on deep/wide graphs, but scales well and provides extra safety.
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**Recommendation:**
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- Use cherrypick for enterprise, multi-feature/testable DI needs.
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- Use get_it for fast games, scripts, tiny Apps, and hot demos.
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