play-hard-work-hard

Play Framework (2) -Security (especially for web application)

Here we talk about how to make our web application much safer. Even though most front-end codes can be detected by any developers, we still can use back-end to protect each request’s security. I will list the method which…

Play Framework (11) — Basic Concept

Play Framework is event-driven server. NodeJS is threaded server.

Non-blocking IO

• build on top of Netty
  Netty is an asynchronous event-driven network application framework for rapid development of maintainable high…

Akka (5) — Scheduler

The default implementation of Scheduler used by Akka is based on job buckets which are emptied according to a fixed schedule. The scheduler method returns an instance of akka.actor.Scheduler which is unique per ActorSystem and is used internally for scheduling things to happen at specific…

Sass Study Note

Sass is written by Ruby. So if you want to use Sass, you need to have Ruby first. Here we list steps to install Sass on Mac.

brew install ruby
ruby -v
sudo gem install sass
sass -v

Slick(2) — study note

1. Database Connection:

There are three ways to do Database Connection:

1. using a JDBC URL
2. using a DataSource
3. using a JNDI name

Scala (9): Collection and Functional Combinators

Collection

List

val number = List(1, 2, 3, 4) 
// output: List[Int] = List(1, 2, 3, 4)

Set: no duplicates

Algorithm (1): Arrays and Strings

When I preparing interview, I use “Cracking the Coding Interview” this book. I write my solutions by Scala.

1.1 Implement an algorithm to determine if a string has all unique characters. What if…

Slick (3) — connection pool

Before talking into detailed knowledge about connection pool in Slick, we need to figure out two things: One is about Slick. Slick does not provide a connection pool implementation of its own. The other thing is about JDBC, which not provides asynchronous database driver for JVM…