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@asukakenji
asukakenji / 0-go-os-arch.md
Last active May 12, 2025 09:54
Go (Golang) GOOS and GOARCH

Go (Golang) GOOS and GOARCH

All of the following information is based on go version go1.17.1 darwin/amd64.

GOOS Values

GOOS Out of the Box
aix
android
@inkrement
inkrement / clickhousedump
Created August 19, 2017 14:26
dump all clickhouse databases and tables
#!/bin/bash
OUTDIR=.
while read -r db ; do
while read -r table ; do
if [ "$db" == "system" ]; then
echo "skip system db"
continue 2;
@troyfontaine
troyfontaine / 1-setup.md
Last active May 9, 2025 22:20
Signing your Git Commits on MacOS

Methods of Signing Git Commits on MacOS

Last updated March 13, 2024

This Gist explains how to sign commits using gpg in a step-by-step fashion. Previously, krypt.co was heavily mentioned, but I've only recently learned they were acquired by Akamai and no longer update their previous free products. Those mentions have been removed.

Additionally, 1Password now supports signing Git commits with SSH keys and makes it pretty easy-plus you can easily configure Git Tower to use it for both signing and ssh.

For using a GUI-based GIT tool such as Tower or Github Desktop, follow the steps here for signing your commits with GPG.

@dopey
dopey / main.go
Last active April 22, 2025 12:17 — forked from denisbrodbeck/main.go
How to generate secure random strings in golang with crypto/rand.
package main
import (
"crypto/rand"
"encoding/base64"
"fmt"
"io"
"math/big"
)
@zmts
zmts / tokens.md
Last active May 12, 2025 10:47
Про токены, JSON Web Tokens (JWT), аутентификацию и авторизацию. Token-Based Authentication

Про токены, JSON Web Tokens (JWT), аутентификацию и авторизацию. Token-Based Authentication

Last major update: 25.08.2020

  • Что такое авторизация/аутентификация
  • Где хранить токены
  • Как ставить куки ?
  • Процесс логина
  • Процесс рефреш токенов
  • Кража токенов/Механизм контроля токенов
@kyptov
kyptov / rabbitmq_cheatsheet_ru.md
Last active February 11, 2024 21:18
RabbitMQ Cheat Sheet (russian)

Общие упрощенные понятия. Возможно существуют способы задать другое поведение нежели данное упощенное.

Понятия

  • producer - отправитель, программный код, который отправляет сообщение.
  • consumer - получатель, программный код, который должен получить сообшение.
  • exchange - обменник, функционал RabbitMQ, получает сообщение с заданными параметрами от отправителя и:
    • может сбросить(удалить) сообщение или вернуть отправителю (зависит от атрибутов сообщения),
    • может отправить сообщение в очередь,
    • может отправить сообщение в несколько очередей (сообщение будет скопировано для каждой очереди)
  • queue - очередь, функционал RabbitMQ, хранит все сообщения и раздает их получателям.
  • message - сообщение, содержит атрибуты необходимые RabbitMQ, а также данные для передачи от отправителя к получателю
@danieleggert
danieleggert / GPG and git on macOS.md
Last active March 6, 2025 20:45
How to set up git to use the GPG Suite

GPG and git on macOS

Setup

No need for homebrew or anything like that. Works with https://www.git-tower.com and the command line.

  1. Install https://gpgtools.org -- I'd suggest to do a customized install and deselect GPGMail.
  2. Create or import a key -- see below for https://keybase.io
  3. Run gpg --list-secret-keys and look for sec, use the key ID for the next step
  4. Configure git to use GPG -- replace the key with the one from gpg --list-secret-keys
@ospatil
ospatil / git.txt
Last active May 2, 2022 15:45
Important git command for branch and tag management
1. get list of remote tags
git ls-remote --tags origin
2. get list of local tags
git tag
3. remove local tag
git tag -d <tag name>
4. delete remote tag
@valyala
valyala / README.md
Last active March 20, 2025 08:44
Optimizing postgresql table for more than 100K inserts per second

Optimizing postgresql table for more than 100K inserts per second

  • Create UNLOGGED table. This reduces the amount of data written to persistent storage by up to 2x.
  • Set WITH (autovacuum_enabled=false) on the table. This saves CPU time and IO bandwidth on useless vacuuming of the table (since we never DELETE or UPDATE the table).
  • Insert rows with COPY FROM STDIN. This is the fastest possible approach to insert rows into table.
  • Minimize the number of indexes in the table, since they slow down inserts. Usually an index on time timestamp with time zone is enough.
  • Add synchronous_commit = off to postgresql.conf.
  • Use table inheritance for fast removal of old data:
@popravich
popravich / PostgreSQL_index_naming.rst
Last active January 6, 2025 08:57
PostgreSQL index naming convention to remember

The standard names for indexes in PostgreSQL are:

{tablename}_{columnname(s)}_{suffix}

where the suffix is one of the following:

  • pkey for a Primary Key constraint;
  • key for a Unique constraint;
  • excl for an Exclusion constraint;
  • idx for any other kind of index;