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SitePoint PHP Blog:
PHP-level Performance Optimization with Blackfire
Jun 22, 2018 @ 11:49:40

On the SitePoint PHP blog they've posted a tutorial that continues their series covering the creation of a simple image gallery blog application. In this latest part of the series the author covers the use of the Blackfire.io service for performance testing.

Throughout the past few months, we’ve introduced Blackfire and ways in which it can be used to detect application performance bottlenecks. In this post, we’ll apply it to our freshly started project to try and find the low-points and low-hanging fruit which we can pick to improve our app’s performance.

If you’re using Homestead Improved (and you should be), Blackfire is already installed.

While it’s useful to be introduced to Blackfire before diving into this, applying the steps in this post won’t require any prior knowledge; we’ll start from zero.

The tutorial walks you through some of the basics of Blackfire and what kind of information it will report back. After a small change to the Homestead YAML configuration, they show how to profile the landing page and what the resulting graph looks like. It then goes through the code, finding each of the pain points and refactoring them to improve performance.

tagged: blackfireio series performance optimize tutorial

Link: https://www.sitepoint.com/php-level-performance-optimization-blackfire/

SitePoint PHP Blog:
Apache vs Nginx Performance: Optimization Techniques
Jun 15, 2018 @ 12:22:11

On the SitePoint PHP blog they've posted a tutorial from author Tonino Jankov sharing some techniques you can use to increase the performance of Apache and Nginx when serving up your web applications.

The article starts with some of the basics, introducing both the software and some of the concepts around their use and evaluation:

  • an introduction to Apache and Nginx
  • hardware considerations
  • monitoring
  • testing the systems (benchmarking)

It then starts on the tuning tips, one section for each of the web servers. For Apache it covers changes for the mpm modules, disabling htaccess and browser cache control with mod_expires. On the Nginx side, they mention changing the number of workers created, tuning the keepalive timout and setting up server-side caching.

tagged: apache nginx performance optimize tip tutorial configuration

Link: https://www.sitepoint.com/apache-vs-nginx-performance-optimization-techniques/

Laravel News:
Speed Up Laravel on Top of Swoole
May 07, 2018 @ 10:47:09

On the Laravel News site there's a tutorial posted showing you how to use the Swole extension to speed up your Laravel-based application. Swole is a PHP extension written in C that provides missing asynchronous functionality to the language.

Swoole is a production-grade async programming framework for PHP. It is a PHP extension written in pure C language, which enables PHP developers to write high-performance, scalable, concurrent TCP, UDP, Unix socket, HTTP, WebSocket services in PHP without too much knowledge of the non-blocking I/O programming and low-level Linux kernel. You can think of Swoole as something like NodeJS but for PHP, with higher performance.

The post covers the "why?" question of using Swoole with Laravel, explaining how the traditional PHP request flow works. Swoole provides a way to reduce come of this processing overhead and increase performance. They then help you integrate Swoole and Laravel using a custom package (swooletw/laravel-swoole), installing both the package and using PECL to install the Swoole extension. Once the extension is enabled and the service provider is added, all it takes is an artisan command to start the web server up.

The post finishes with some quick benchmarks using wrk comparing it against a typical Nginx setup with PHP-FPM. Not surprisingly, Swoole outperforms the other setup well.

tagged: laravel swoole extension performance tutorial package install

Link: https://laravel-news.com/laravel-swoole

Symfony Finland:
MySQL 8.0 released with new features and improved performance
Apr 25, 2018 @ 11:57:45

On the Symfony Finland site they cover a recent announcement from MySQL about the release of their latest version: MySQL 8.0. In this post they cover some of the new features and performance improvements that come with this new version.

The MySQL development team has announced the General Availability of the MySQL 8.0.0 Open Source database.

This is the version following MySQL 5.7 that was released in late 2015 with interesting features like extensive JSON field support. Plenty of work has gone into this version as well and in an introductory post goes in-depth into all the enhancements.

The post includes a listing of eight topics (ironically) for the new updates including:

  • Support for Window functions, Common Table Expressions, NOWAIT and SKIP LOCKED, Descending Indexes, Grouping, Regular Expressions, Character Sets, Cost Model, and Histograms (SQL)
  • Geography support. Spatial Reference Systems (SRS), as well as SRS aware spatial datatypes, spatial indexes, and spatial functions.
  • Remote management, Undo tablespace management, and new instant DDL.
  • OpenSSL improvements, new default authentication, SQL Roles, breaking up the super privilege, password strength, and more.

Check out the rest of this post for more of the overview or MySQL's official announcement for the full details.

tagged: mysql8 release feature overview performance database

Link: https://symfony.fi/entry/mysql-8-0-released-with-new-features-and-improved-performance

Sameer Borate:
How to profile and debug MySQL queries for speed
Apr 02, 2018 @ 10:40:59

On his Code Diesel site Sameer Borate has a quick post sharing a helpful tool that can make profiling the SQL queries your application makes simpler. In this post he shows how to use the Neor Profile SQL profiler desktop application (compatible with Windows, OSX and Linux) to hook into your SQL flow and evaluate the queries in real time.

Most MySQL applications need profiling for speed enhancements at one time or other. I’ve developed several web applications in the past wherein MySQL queries were a major bottleneck in the application performance. In the past however there were no easy tools to analyse SQL queries in a running application and we programmers had to depend on some makeshift solutions to debug SQL queries. Now, however there are some nice free tools which can help you profile MySQL application queries easily.

My favorite among them is Neor Profile SQL profiler. This is a desktop tool which allows you to easily profile your application SQL queries and also lets you query the same in a live application.

He starts with the changes to make to your configuration to point to the profiler for interception. This is then hooked into the MySQL database and queries will be profiled in real-time. The tool provides information like time of execution, number of rows returned, a graph showing the queries by type and includes the ability to run (or re-run) custom queries.

tagged: mysql database profile speed performance

Link: https://www.codediesel.com/mysql/how-to-profile-and-debug-mysql-queries-for-speed/

QuickerWP.com:
Make your WordPress blog fly with these speedy plugins and tweaks
Mar 22, 2018 @ 11:05:43

On the QuickerWP blog there's a new post with some recommendations of plugins and techniques you can use to make your WordPress blog "fly" (increase the overall performance).

WordPress sites are notorious for their poor loading times. The platform itself comes with very few optimizations, and once you start adding plugins, things will only go south from there. [...] Most of the performance penalties actually come from having too many plugins installed, a poorly optimized site configuration, and a theme that does not optimize loading speeds (most of them don’t).

[...] It’s rare to see high marks [on Yellow Lab Tools] (a B or A result), but after applying the tweaks listed here, we’ve managed to get our own site to score an A (92/100) result, and surprisingly low loading times. Try it on your site to see how you fare.

They have a list of seven recommendations:

  • Autoptimize plugin
  • WP Fastest Cache plugin
  • PurifyCSS
  • TinyPNG plugin
  • Guetzli (for image optimization)
  • CSS Sprites
  • QuickerWP

Each item in the list comes with a brief description of the enhancement it brings to the table and links to find out more information.

tagged: wordpress blog performance recommendation plugin list top7

Link: https://www.quickerwp.com/make-wordpress-blog-fly-speedy-plugins/

Nicolas Grekas:
Making Symfony router lightning fast - 2/2
Feb 22, 2018 @ 12:54:30

Nicolas Grekas has posted the second part of his look at the work that was done to increase the performance on the router in version 4 of the Symfony framework. In part one he covered some of the basic changes made to the router for faster matching. In this latest article he covers some of the "tweaks" made on top of this work to help improve things even more.

In Making Symfony’s Router 77.7x faster - 1/2, we learned how to build a faster URL matcher, using hash-map lookups for static routes, and combined regular expressions for routes with placeholders, while preserving all the advanced features of the Symfony router. However, more work was needed for some real world apps, as at least one of them experienced a slow down. Let’s see how fixing this provided us with (one of) the fastest PHP routers out there.

He then starts working through some of the newer changes to help "reclaim" some of the performance loss in certain situations. He talks about same-prefix route ordering, subpatterns and placeholders to change how the combined regular expressions perform the matching on the incoming URL. The result is an even more performant routing system that's 77 times faster than what they started with.

tagged: symfony routing performance regularexpression regex improvement series part2

Link: https://medium.com/@nicolas.grekas/making-symfony-router-lightning-fast-2-2-19281dcd245b

Symfony Blog:
New in Symfony 4.1: Fastest PHP Router
Feb 16, 2018 @ 10:48:33

On the Symfony blog they have a post covering the result of some changes to how the framework handles incoming requests in Symfony 4: a performance and speed increase in the router making it even better than before.

Symfony 4 is the fastest PHP framework according to independent benchmarks, but we are continuously working on making it faster. In Symfony 4.1, we improved the Routing component to make it much faster when matching incoming URLs.

The post starts with a look at the two functional pieces of route handling: the generation of a URL to match and the matching the framework performs. Symfony 4 has sped things up by creating a "matcher" class during the compilation phase using some of these suggestions. The biggest change was to modify the regular expression URL matching to combine all patterns into one, reducing the number of calls to preg_match and locate the correlating route. The new routing requires no changes in your current Symfony 4 application, it just makes all of the updates it needs behind the scenes during compilation.

tagged: symfony symfony4 router speed performance regularexpression

Link: http://symfony.com/blog/new-in-symfony-4-1-fastest-php-router

php[architect]:
PHP Sessions in Depth
Jan 23, 2018 @ 11:16:33

php[architect] magazine has republished an article from their January 2018 issue by Jeremy Dorn that covers PHP sessions in-depth.

HP Sessions are often taken for granted. A session is a magic array which persists across page loads and holds user-specific data. It’s a fantastic and integral part of most web applications. But when misused, sessions can cause substantial security holes, performance and scalability problems, and data corruption. A deep understanding of sessions is vital to production web development in PHP.

The article covers various topics around PHP sessions and their use including security, performance and scalability. It also covers a few additional topics like serialization of data, session locking and intelligent auto-merging of sessions on the backend. Check out the full article for descriptions of each and some code examples to help show them in action.

tagged: sessions detail security performance scalability additional tutorial

Link: https://www.phparch.com/2018/01/php-sessions-in-depth/

Colin O'Dell:
Optimizing colinodell/json5 with Blackfire
Jan 15, 2018 @ 09:50:37

In a post to his site Colin O'Dell shows how he used the Blackfire.io service to optimize the colinodell/json5 package he created to parse JSON5 in PHP. Blackfire.io is a performance profiling service (from the folks behind Symfony) that shows where the pain points are in your code. They also have a "developer" plan that you can use to try out the service.

Back in November, I released colinodell/json5 - a JSON5 parser for PHP. It's essentially a drop-in replacement for PHP's json_decode() function, but it allows things like comments, trailing commas, and more.

Fast forward to this weekend when I received [a] bug report from a user named Antonio [about slowness in parsing large JSON documents]. Yikes! I always knew that a PHP-based implementation would be slower than PHP's native C implementation, but execution time measured in minutes was completely unacceptable!

So I fired up Blackfire (which I've previously used to optimize league/commonmark) and got to work.

He starts off by getting a baseline to work from, executing the parsing on a custom document he created (not quite as large as in the bug report but still large). After locating a few issues he then started in on the optimizations. The first was an issue with the use of mb_substr, the second was around the remainder of the document to parse and the last an optimization for a regular expression. The post ends with a few other micro-optimizations he also made to the package and a check to use json_decode for faster parsing and only kick in the JSON5 parsing when needed.

tagged: optimize json json5 package blackfireio performance

Link: https://www.colinodell.com/blog/201801/optimizing-colinodelljson5-blackfire