Simple Golang JSON Benchmark

This repository contains benchmarks to evaluate the performance, memory usage, and consistency of three popular JSON libraries in Golang:

• encoding/json (standard library)
• github.com/goccy/go-json
• github.com/json-iterator/go

The benchmarks focus on both serialization (marshaling) and deserialization (unmarshaling) of a struct, with additional tests for handling large datasets, parallel execution and invalid JSON.

Running the Benchmarks

Requirements

Ensure you have Go installed (version 1.18 or higher recommended).

Clone the repository and navigate to the project directory:

git clone https://github.com/pedmrs/bench-json-serialization.git
cd bench-json-serialization

Running the Benchmarks

To run all benchmarks with memory allocation information:

go test -bench=. -benchtime=3s -benchmem

This will output benchmark results for all JSON libraries under different conditions (standard usage, large data, parallel processing, error handling).

Profiling (Optional)

To gather detailed CPU or memory profiling data:

CPU Profiling

go test -bench=. -benchtime=3s -benchmem -cpuprofile=cpu.prof
go tool pprof cpu.prof

This will open an interactive profiling session, where you can explore hotspots in the libraries CPU usage.

Memory Profiling

go test -bench=. -benchtime=3s -benchmem -memprofile=mem.prof
go tool pprof mem.prof

This will open a session where you can analyze memory allocations during benchmarking.