Benchmark Data

Summary Links

slog/JSONHandler is the JSON handler provided with the slog library. It is fast and as a part of the Go distribution it is used along with published documentation as a model for slog.Handler behavior.

slog/JSONHandler

Benchmark Data

Score: 96.09

Benchmark	Runs	Ns/Op	Allocs/Op	Bytes/Op	MB/Sec	Score
Attributes	728,613	1,460.00	6	472	286.38	96.46
Big Group	13,237	91,607.00	14	112,993	284.60	87.81
Disabled	309,729,339	3.95	0	0	0.00	95.95
Key Values	762,825	1,492.00	6	472	279.40	96.53
Logging	44,634	25,601.00	0	0	343.66	98.72
Simple	3,925,278	288.90	0	0	287.26	98.34
Simple Source	1,426,246	833.00	6	568	332.51	89.29
With Attrs Attributes	833,956	1,475.00	6	472	532.31	97.70
With Attrs Key Values	823,609	1,535.00	6	472	511.42	97.67
With Attrs Simple	3,696,938	314.00	0	0	1,432.95	99.61
With Group Attributes	843,816	1,509.00	6	472	286.21	97.43
With Group Key Values	785,883	1,500.00	6	472	288.07	97.51

Benchmark Charts

Warnings

Score: 98.46

Suggested

Duplicates Duplicate field(s) found

Some handlers (e.g. slog.JSONHandler) will output multiple occurrences of the same field name if the logger is called with multiple instances of the same field, generally by using WithAttrs and then the same fields in the eventual log call (e.g. Info). This behavior is currently under debate with no resolution at this time (2024-01-15) and a release milestone of (currently unscheduled) Go 1.23, (whereas Go Release 1.22 is currently expected in February 2024).

Verify: Attribute Duplicate		map[alpha:2 charlie:3]

Verify: Attribute With Duplicate		map[alpha:2 charlie:3]

Handler slog/JSONHandler

Benchmark Data

Benchmark Charts

Warnings