Small test to see if using a literal buffer for keys in JSON decoder improves memory usage. It does.

This test builds a large JSON string, decodes it into an interface{}, runs GC and prints memory stats.

To use standard decoder:

import (
	//"github.com/bserdar/jsdecodertest/json"
	"encoding/json"
)

To use the modified decoder:

import (
	"github.com/bserdar/jsdecodertest/json"
	//"encoding/json"
)

The jsdecodertest/json package is a copy of the standard library encoding/json, with a literal map in the decoder state. decoderState.objectInterface uses the literal map to store field keys in a map.

Using standard library: Alloc:401839488

Use modified decoder: Alloc:353839856

This simple test only works when decoding into an interface{}.