Development Logs

By: Calvin Chieng

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Security SSL Nginx DH Param Letsencrypt Crawler Blacklist AWS S3 Ruby SDK Android Icons Design Gradle Unicode Obfuscation Rails API Signature P12 Convert PEM Cert OpenSSL Encryption Public Key NodeJs NPM PM2 Setup Bootstrap 3 Print reCaptcha Optimization Hint Performance Database Migration Delayed Job HTTP2 iOS AFNetworking TLS Deployment Email SEO Facebook Meta Open graph Sitemap DNS Logging Passenger Config CloudFront Sendy Microdata Maintenance Ubuntu RabbitMQ Sidekiq Cookies HSTS Cron job Crontab SMTP RSpec Mailer Test Exception Bugsnag Bundle Gem Java Framework Spark PHP7 Laravel Httparty Retrofit ActionMailer Telegram Chatbot Controller Jar Upstart Systemd Rubocop Coding standard Git Gitignore Secret Capistrano Version Date Time Google Oauth2 Omniauth Cache Redis Upgrade Javascript Yarn Authentication rbenv Active Storage

Changing the passenger max process

Adjust to balance the performance vs. resources

Guide Ruby Passenger Nginx

Posted by Calvin Chieng on May 22, 2018, 19:56

Increase file descriptor for RabbitMQ

For ubuntu 16.04

Snippet Ubuntu RabbitMQ Config

Posted by Calvin Chieng on May 16, 2018, 20:44

Using Active Storage for API project

With AWS S3 as storage service provider

Guide Rails Active Storage S3 AWS

Posted by Calvin Chieng on May 13, 2018, 15:30

Install new version of Ruby via rbenv

For mac and homebrew

Snippet Ruby rbenv

Posted by Calvin Chieng on May 1, 2018, 22:52

Rails API Authentication

None, Basic, Token and ApiKey Authentication

Snippet Rails Authentication API

Posted by Calvin Chieng on April 10, 2018, 17:02

Nginx 1.13.9+ HTTP/2 server push

To reduce round trip time (RTT)

Guide Nginx HTTP2 Performance

Posted by Calvin Chieng on March 22, 2018, 23:34

Assets precompile fails because of insufficient memory

Fix it without buying more RAM

Error Rails Ubuntu

Posted by Calvin Chieng on March 22, 2018, 18:00

How to use yarn in Rails 5.1 to manage javascript dependencies?

Including steps to upgrade from older version of Rails

Guide Rails Javascript Yarn

Posted by Calvin Chieng on March 22, 2018, 17:10

How to set CAA DNS record?

To hint SSL CA if they are authorized to issue a cert for this domain

Guide Security SSL DNS

Posted by Calvin Chieng on March 21, 2018, 17:48

How to upgrade Gradle in your Android project?

Gradle Distribution and Android Gradle Plugin

Guide Android Gradle Upgrade

Posted by Calvin Chieng on March 17, 2018, 18:17

Redis store integration steps

Rails cache store using Redis

Guide Rails Cache Redis

Posted by Calvin Chieng on March 16, 2018, 11:47

Rails url helper does not respect "relative_url_root" configuration in mailer

Specify relative url for mailer using script_name

Error Rails ActionMailer Config

Posted by Calvin Chieng on March 8, 2018, 17:08

Letsencrypt "Invalid response" error during renewal due to http/https redirection

Make sure the authorization file can be accessed

Error Nginx SSL Letsencrypt

Posted by Calvin Chieng on February 2, 2018, 11:45

Integrate Google Sign-In

Using Google OAuth2 with Omniauth

Snippet Ruby Google Oauth2 Omniauth

Posted by Calvin Chieng on January 28, 2018, 18:13

Handling weekdays, weekends and public holidays

By using various built-in methods in Ruby and Rails

Snippet Ruby Rails Date Time

Posted by Calvin Chieng on January 23, 2018, 01:11