[coordinator] Productization of the simple dependency manager

[liran-funaro]

Type of change

• Improvement (improvement to code, performance, etc)

Description

Simple manager:

• Add support for waiting TX limit
• Add metrics
• Add test
• Optimize constructCompositeKey()

Performance

Benchmarking was done on an Apple M1 machine.
When dependency was introduced, it was with 30% dependent TXs.
The following tests are conducted with 2, 4, or 6 independent read-write keys, and dependent keys are added accordingly.
All combinations of dependencies were tested. However, all conflicts with write had the same performance as write-write conflicts.

Benchmark on i9-14900K

Related issues

• resolves [dep-graph] Productization of the simple dependency graph #56

[Copilot]

Pull Request Overview

This PR productionizes the simple dependency manager with significant improvements to performance, metrics, and testing. The changes focus on optimizing the simple dependency manager through various enhancements including TX limit support, comprehensive metrics integration, and performance optimizations.

• Adds waiting TX limit support and comprehensive metrics to the simple dependency manager
• Optimizes the constructCompositeKey() function for better performance with pre-allocation and efficient encoding
• Replaces the Config struct with Parameters and removes the DummySigner in favor of nil checks for better performance

Reviewed Changes

Copilot reviewed 17 out of 18 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
utils/signature/sigtest/signer.go	Removes DummySigner struct and optimizes signature handling with nil checks
service/coordinator/dependencygraph/simple.go	Major refactoring with waiting TX limits, metrics integration, and performance improvements
service/coordinator/dependencygraph/transaction_node.go	Optimizes constructCompositeKey function with better memory allocation and encoding
service/coordinator/dependencygraph/parameters.go	New file defining Parameters struct to replace Config
service/coordinator/dependencygraph/manager_test.go	Extensive test additions and benchmark improvements
service/coordinator/dependencygraph/manager.go	Updates to use Parameters instead of Config
Multiple config files	Updates default waiting TX limits and removes deprecated configuration options

[cendhu]

LGTM. One small test needs to be added for waiting tx limit.

[cendhu]

why are we renaming it to Parameters from Config. I think, we have consistently used Config everywhere.

[liran-funaro]

We use config for configurations (user-facing configurations with map-structure annotations). And parameters for function parameters. This struct is only used internally as parameters to the dependency graph, so it should be named as such.