Categorygithub.com/zerjioang/time32
repositorypackage
0.0.0-20211102104504-b756043b9843
Repository: https://github.com/zerjioang/time32.git
Documentation: pkg.go.dev
Overview
Dependencies
3
Dependents
1

# Packages

No description provided by the author

# README

uint32 time for Golang

Note: this package is based on Golang official time implementation.

Features

  • Get current time as uint32 epoch (millis).
  • Same performance as time package from standard Go library.
  • Less GC pressure by removing timezone location data related fields.
  • Time cache for high speed time requests. Default update frequency: 0.1s

Differences from time.Time package

  • *loc pointer usage has been removed from Time struct to avoid pointer pressure on GC cycles.
  • Included a method Epoch() that returns current epoch time as uint32 instead of int64. This means, we can store our time data in 4 bytes.

Usage


package main

import (
  "fmt"
  "github.com/zerjioang/time32"
)

func main(){
  tt := time32.Epoch()
  fmt.Println(tt)
}

# prints current time in epoch format
Example: 1601452800

An example is provided at ./example/main.go

Cached timing

For application that require a constant access to system time, a cached mechanism is included that keeps last time on a 0.1s refresh rate. To use this caching features, available methods are:

  • ReuseTime
  • ReuseUnix
  • ReuseUnixNano

Previous method will return last value within a 0.1s window. Note that this feature might be useful for adding a timestamp to logs, expiration check, etc.

Performance

goos: linux
goarch: amd64
pkg: github.com/zerjioang/time32

BenchmarkNow/epoch-custom-12         	     356	       3314537 ns/op	     0.00 MB/s	       1 B/op	       0 allocs/op
BenchmarkNow/epoch-standard-go-12    	     345	       3301546 ns/op	     0.00 MB/s	       1 B/op	       0 allocs/op
BenchmarkNow/custom-12               	37442151	         33.07 ns/op	    30.24 MB/s	       0 B/op	       0 allocs/op
BenchmarkNow/standard-go-time-12     	38039060	         32.16 ns/op	    31.09 MB/s	       0 B/op	       0 allocs/op
BenchmarkNow/custom-ref-12           	36875410	         32.14 ns/op	    31.11 MB/s	       0 B/op	       0 allocs/op
BenchmarkNow/standard-go-time-ref-12 	36313864	         32.98 ns/op	    30.32 MB/s	       0 B/op	       0 allocs/op
BenchmarkNow/reuse-time-12             932550987	         1.270 ns/op	   787.44 MB/s	       0 B/op	       0 allocs/op
BenchmarkNow/reuse-unix-12             920748625	         1.271 ns/op	   786.86 MB/s	       0 B/op	       0 allocs/op
BenchmarkNow/reuse-unixnano-12         888746485	         1.309 ns/op	   764.14 MB/s	       0 B/op	       0 allocs/op
BenchmarkNow/reuse-time-unixnano-12    529924074	         2.292 ns/op	   436.22 MB/s	       0 B/op	       0 allocs/op

License

All rights reserved to @zerjioang under GNU GPL v3 license

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  • Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  • Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
  • Uses GPLv3 license described below

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.