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

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

Define .ruby-version for all your app

To prevent wrong ruby version and gems being used in a multi-apps server

Error Ruby Version Passenger

Posted by Calvin Chieng on December 10, 2017, 14:49

False warning for Style/AndOr cop when used as chaining operation

"and" and "&&" does not always give equivalent result

Error Ruby Rubocop

Posted by Calvin Chieng on December 3, 2017, 16:29

Deploy rails app using Capistrano

Capistrano is an useful deployment automation tool

Guide Rails Capistrano Deployment

Posted by Calvin Chieng on December 3, 2017, 02:10

Use rails 5.1 encrypted secrets

To protect production credentials even if they are committed into git

Guide Ruby Rails Secret Encryption

Posted by Calvin Chieng on December 2, 2017, 22:45