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QaFoo Blog:
Scaling Constraints of Languages
Aug 04, 2016 @ 09:45:08

The QaFoo blog has written up an interesting post looking at languages and scalability and some of the constraints that can come along with them.

Micro-Services or any set of small services are common again right now. While it can make a lot of sense to use a dedicated service for a well defined problem those services are sometimes used just to play with a different server software. While it is pretty obvious for most that selecting the right database is important the same is true for selecting the right language (virtual machine) for the job.

There are different types of services or server applications where different types of virtual machines (executing the opcodes / bytecode of the compiled source code) make more or less sense. What are the criteria we should base such a decision on and which language should we choose when?

As their primary work is related to PHP, they focus in on it. They talk about why PHP has become such a popular language (the "LCoDC$SS" acronym) and why it fits in with HTTP's statelessness perfectly. On the flip side, they also talk about when it doesn't make sense to use PHP - mostly centering around what would take long-running PHP processes. They then compare this to a similar setup with other languages like Node.js, Go and Java (and how well those scale themselves).

tagged: scalability language feature comparison java nodejs go

Link: https://qafoo.com/blog/088_scaling_constraints_of_languages.html

Symfony Finland:
It's time to get creative with the Symfony Expression Language
Mar 21, 2016 @ 10:39:23

On the Symfony Finland site there's a post encouraging you to "get expressive" with the Symfony Expression Language. The Symfony Expression Language is a part of a component in the Symfony framework that allows for custom evaluation and action in the form of a specially formatted string.

Way back in November 2014 the Symfony team introduced the ExpressionLanguage component. It is essentially a simplified version of control structures that you use in the Twig templating language, producing a single value in the end.

The feature has a number of uses, but seems to be under utilized by the Symfony and PHP communities - especially in higher level functionalities. [...] I think there is a lot of room for developers to adopt the component in many different functionalities, not only for routing, access control and so on.

The post goes on to talk about expression languages in general and how they're present in other languages too (like Java with JUEL). He then shares a basic example evaluating the data in an array and getting back a pass/fail result.

tagged: symfony expression language tutorial introduction juel java

Link: https://www.symfony.fi/entry/its-time-to-get-creative-with-the-symfony-expression-language

DZone.com:
From Java to PHP
Mar 15, 2013 @ 11:55:29

On DZone.com today there's a new post that welcomes those coming from Java over to PHP with a few recommendations and suggestions about what's different and some things they might find familiar in the transition.

We are welcoming some new colleagues that come from a Java background in the Onebip team, both from the development and operations field. Here's a primer on learning PHP in this situation, that you may find useful when introducing similar people in your PHP-based projects.

He breaks it up into a few sections:

  • the "absolute basics" (like the differences in variable handling)
  • things to not care about (like procedural PHP or the installation of Apache+PHP)
  • how to "write to a graph" (things like PDO, DateTime)
  • things to watch out for (like == vs === and some php.ini settings)

He also recommends doing some coding katas with TDD to give you a "crash course" in the language and help you learn from more than just reading.

tagged: java language migrate learn suggestions

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PHPClasses.org:
Lately in PHP, Episode 28 - Should PHP be Copying the Java features and practices?
Nov 13, 2012 @ 13:31:04

PHPClasses.org has posted the latest episode of their "Lately in PHP" podcast series - episode #29, Should PHP be Copying the Java features and practices?.

Particularly since version 5.0, PHP has been copying many of Java features and practices of Java programmers. This means that if Java programmers practices tend to be bureacratic and less productive, PHP programmers that use those features or adopt those Java practices may also become less productive. This was one of the main topics discussed by Manuel Lemos and Michael Kimsal on the episode 29 of the Lately in PHP podcast.

There's also a bit of discussion about adding generics to PHP and using OAuth in PHP. You can listen to this latest episode either via the in-page player, by downloading the mp3 or by watching the video of the recording. You can also subscribe to their feed to get the latest in the podcast series.

tagged: latelyinphp podcast java functionality oauth generics

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Matt Frost:
Starting with Selenium (and Headless on a VM)
Aug 27, 2012 @ 08:16:55

Matt Frost has posted a two part series of some of his experiences in setting up Selenium to execute it in a VM and run tests on your application.

I was a little scared when it came to setting up Selenium, I figured it was going to be difficult to setup and configure. So I was pleasantly surprised when it really wasn't. So here are a few of the mistakes I made; since I use Vagrant to do all my development I actually grabbed Selenium and started from there. Not a good place to start, although as I found out later; not a total dead end.

He includes the initial setup of things like PHPUnit and the Selenium .jar file as well as a sample test that loads a page and checks the title of the page. His second post shows how to set it up in the VM (using Vagrant, xvfb to capture the output and Firefox to execute the tests).

tagged: selenium frontend testing vm vagrant firefox java xvfb

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Chad Minick:
PHP frameworks are obsolete
Aug 22, 2012 @ 09:25:47

In his latest post Chad Minick shares some thoughts as to why he thinks PHP frameworks are obsolete and how, despite there still being a use for them, a lot of them are just trying to solve the same problems all over again.

Now before I start getting hate mail, let me explain that I still think there is a market for PHP frameworks. I think if you have a moderately low traffic site that’s going to live on shared hosting, and is basically a CRUD application on top of MySQL, disregard this article, it probably isn’t for you. However, I’ve seen so many projects start out with that scope. They either grow or the developer/client wants to add more fancy new features they are starting to see elsewhere on the web. Then I see all these PHP developers hacking things that the PHP stack really isn’t meant to do.

He takes some of the core features of several of the popular frameworks out there and breaks them out into a list of technologies that do that work themselves (such as "Web Server", "Dependency Management", "Caching" and "Messaging"). He points to a Java/Scala framework, Play as an example of having several of these technologies built-in where you don't have to have a whole other set of skills to use them effectively. It's an interesting idea but seems a little NIH to me.

tagged: framework opinion obsolete java scala play

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Nerds Central:
Facebook Moving To The JVM
Aug 13, 2012 @ 08:04:26

According to this new post on Nerds Central, there's been speculation that Facebook, needing even more of a performance boost than hiphop gave them, is moving into using PHP in a JVM.

The presence of Facebook engineers at the JVM Language Summit in San-Francisco along with their interest in implementing PHP using invoke-dynamic on the JVM is a the shock. The main seismic event will be nothing less than the complete removal of interpretors from main stream general purpose programming.

He talks some about the JVM environment (and the Magik project) as well as wondering about what sort of performance boost it might actually give.

So Are Facebook Doing The Right Thing? Yes! The rise and rise of Javascript over the last 4 years as shown us just how powerful JIT compilation of once interpreted languages can be. The fall and fail of complete re-writes has shown us just how unrealistic it is to completely move a working system from one language to another. Facebook has a stupid amount of PHP and so it is by far the most sensible thing to port that to mlvm. Actually it should be pretty easy.
tagged: facebook jvm java virtualmachine

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Luis Atencio's Blog:
Dependency Injection in PHP
Jun 09, 2012 @ 10:55:36

On his Reflective Thought blog Luis Atencio takes a look at the current state of dependency injection in PHP and shares a simple refactor from non-DI to code that uses it as a service locator.

If you have worked with frameworks such as Spring or Google Guice, you will understand the power and flexibility that dependency injection provides your humongous code base. [...] One quick drawback that I see is that the stateless nature of PHP makes things like object containers not very practical.

He proposes a slightly different kind of dependency injection system, one more akin to what's provided in the Java world where annotation and reflection are components of the integration. He provides a code sample of how this would look and points to Java's JSR-330 standard for some of the annotation examples (like "@inject" or "@scope").

tagged: dependency injection java suggestion container service resource

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PHPMaster.com:
Let’s Talk: Efficient Communication for PHP and Android, Part 1
May 28, 2012 @ 16:20:09

On PHPMaster.com today, they've started a new series about integrating two popular technologies - PHP and the Android OS - in this new tutorial from Matthew Turland. He'll show both sides of the code needed to get your Android app talking to a PHP backend.

This two-part article will guide you through the process of building an efficient PHP-based REST web service to be consumed by an Android-based application. Some of the concepts presented here are also applicable to other mobile platforms, such as iOS. I assume you already know the basics of PHP and Android development and that you have a suitable development environments set up for both. I’ll focus mainly on showing you how to handle data serialization and compression in both environments.

In this first part, he starts from the client side, creating the code (Java) that's needed to create the connection to the backend. He stets it up as a background task so its execution won't block the main app from working. He shows how to execute it, running an "on create" method and checking to ensure the network is available for the request.

tagged: tutorial android communication backend mobile java

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DZone.com:
The standard PHP setup
Apr 17, 2012 @ 10:10:54

On DZone.com Giorgio Sironi shares what he describes as his "standard PHP setup" - the tools and standards he commonly uses when developing his projects.

Last week I passed a day speeding up a Java and Ruby oriented team which started developing a PHP application: not only a standard project structure was required, but also some hints on the default tools and process to work with it. Here's what I thought was crucial during the setup, based on the question of my Rubyist colleague. Of course one of the most visible differences is the language itself, but there is a lot more tacit knowledge to share.

Things mentioned in the post include: development tools (like IDEs), the language itself and similarities to other languages, a standardized project setup, a good testing methodology and a bit of discussion about using external libraries.

tagged: standard setup ruby java project tools

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