Clavin June articles - 78 total
Update on My Mistake on Converting Slice to Slice of Ptr in Golang
Photo by @iavnt on Unsplash Three years ago I wrote on how I wrongly implementing slice to slice...
Golang Structured Logging Introduction
I was doing sharing session this week related to structured logging and how we can utilize it in my...
Golang Testing HTTP Handler
FaFiFu This section is a bullshittery, you can skip it to the main section It's been...
Fetch Current Script Tag Attributes in Javascript
Introduction Javascript is a language with thousands of users and modules. Every single...
Learning PromQL by Exercising
learning promql by exercising
Working with Multiple Gitconfig
Introduction This article will be a quick tips if you're using multiple git config...
Ways to Define Custom Command-Line Flags in Golang
Introduction If you're familiar with command-line interfaces, you might have seen flags...
Handle Database Credential Rotation in Golang
Introduction Many of you might have heard of the database credential rotation. It is a...
Create Flag Using Bitmask and Bitwise Operator in Go
Introduction I revisit some of my college notes, and find that in my first year of...
Find Git Branching Point Between Branch
➜ pet git:(master) git --no-pager log --oneline -1 2422e70 (HEAD -> master, origin/master)...
Podman Support Multi Arch
$ podman machine ssh # inside podman machine $ sudo rpm-ostree install qemu-user-static $ sudo...
Golang HTTP Handler With Gzip
Introduction Golang has many kinds of compression technique within its standard library...
Golang Escape Double Quoted String Easily
main.go package main import . "fmt" func main() { Printf("%q",...
Include Dotenv File to Makefile
Directory Structure $ tree -a . . ├── .env └── Makefile 0 directories, 2 files ...
Golang Print Struct Verbosely
package main import ( "fmt" ) type Foo struct { bar Bar } type Bar struct { number...
Golang Inject Build Time Variable
package main import . "fmt" var foo = "not injected" func main() { Println(foo) } ...
Push Commit From Github Action
name: example on: push jobs: example: runs-on: ubuntu-latest steps: - uses:...
Golang Stream All Lines From Stdin
write.sh #! /bin/sh set -euo pipefail for i in {1..100}; do echo "$i" sleep...
Git Log Prettify
$ git log -5 \ --pretty='format:{"shortRef": "%h", "authorDateIso": "%aI", "authorName": "%aL",...
Bash Initiate Redis Cluster Using Docker
#!/bin/sh set -e # get accessible docker bridge's IP DOCKER_BRIDGE_IP=$(docker network inspect...
Comparing String to Avoid Time Based Attacks
Code package foo_test import ( "crypto/rand" "crypto/subtle" "fmt" ...
Change Directory to Git Root Directory
$ pwd /tmp/bjora-project/backend/scripts/docker $ cd `git rev-parse --show-toplevel` $...
Golang WASM Async Function
package main import ( "fmt" "syscall/js" ) type fn func(this js.Value, args []js.Value)...
Unix Print Aliased Command's Location
$ which ls ls: aliased to ls -G $ type -a ls ls is an alias for ls -G ls is /bin/ls Enter...
Golang HTTP Server Graceful Shutdown
package main import ( "context" "errors" "log" "net/http" "os" ...
How to Write Portfolio for DevOps Engineer?
how to write portfolio for devops engineer
Construct Golang Struct Using Optional Function
Using optional function to allow user optionally set attributes package main import ( ...
Gradle Debugging Dependencies
# gradle <module-name>:dependencies --configuration <configuration> $ gradle...
Golang Panic Handler Middleware
Handling panic elegantly: package main import ( "fmt" "log" "net/http" ) func...
Golang Dependency Injection Using Wire
Introduction When it comes to maintaining a large application codebase, sometimes you...