alexandru

How to add a Web Feed (RSS/Atom) to your Jekyll website

If you're generating your website with Jekyll or another static website generator, don't forget to also expose a web feed for us old timer using RSS readers. The format we'll be preferring here is Atom.

Some reasons to expose a web feed:

1. people using RSS readers regularly are pretty loyal, RSS/Atom subscribers being like a mailing list for some of us
2. tooling knows RSS/Atom — e.g. the easiest way to build a mailing list is to give Mailchimp your RSS feed

If you're looking for a recommendation on online RSS readers, I personally like Newsblur.

vilinski

import cats._
import cats.implicits._
import doobie._
import doobie.implicits._

def setIntOpt(n: Int, v: Option[Int]): PreparedStatementIO[Unit] =
  v match {
    case None    => FPS.setNull(n, java.sql.Types.INTEGER)
    case Some(s) => FPS.setInt(n, s)
  }

djspiewak

Quick Tips for Fast Code on the JVM

I was talking to a coworker recently about general techniques that almost always form the core of any effort to write very fast, down-to-the-metal hot path code on the JVM, and they pointed out that there really isn't a particularly good place to go for this information. It occurred to me that, really, I had more or less picked up all of it by word of mouth and experience, and there just aren't any good reference sources on the topic. So… here's my word of mouth.

This is by no means a comprehensive gist. It's also important to understand that the techniques that I outline in here are not 100% absolute either. Performance on the JVM is an incredibly complicated subject, and while there are rules that almost always hold true, the "almost" remains very salient. Also, for many or even most applications, there will be other techniques that I'm not mentioning which will have a greater impact. JMH, Java Flight Recorder, and a good profiler are your very best friend! Mea