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How to Fix Yoast SEO for WordPress DeleteDuplicateIndexables MySQL error

WordPress / By /

In recent days, there are a number of reports about broken Yoast SEO database operations, related to the DeleteDuplicateIndexables function. The PHP function is located in the file wordpress-seo\src\config\migrations\20200507054848_DeleteDuplicateIndexables.php, and in this post I’ll provide you with a possible fix for this statement. Read on.

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Increase WordPress’ memory limit WP_MEMORY_LIMIT properly in wp-config.php

WordPress / By /

The WordPress memory limit can be increased by the WP_MEMORY_LIMIT variable in wp-config.php. However, I see this done wrong over and over again in WordPress plugins and themes. In a worst case scenario this may even decrease the available amount of memory for WordPress! So be careful with the advice you follow. In this post I show you a correct way of setting WordPress WP_MEMORY_LIMIT and PHP memory_limit settings.

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Optimized WordPress hosting (9+ practical tips)

WordPress / By /
Your WordPress hosting at Warp Speed - img. credits: Christian Daryanto Limas @ flickr

Optimized WordPress hosting is a subject on which a lot is written about. And therefore, this post is not about where to host your WordPress blog, or who offers the best WordPress hosting. This post is for you developers, what you can do to optimize your WordPress hosting. Or for any other PHP web application for that matter. This post is not about setting up high-availability, fail-over, clustering, IIS versus Nginx versus Apache, RAID 1, 5, 6, 10, different types of storage, and so on. It’s about solving performance issues.

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MySQL InnoDB performance improvement: InnoDB buffer pool instances – Updated!

MySQL / By /
High Performance MySQL

Are you running into MySQL load problems? Learn how to tune MySQL servers for a heavy InnoDB workload, by configuring innodb_buffer_pool_instances and increasing read/write I/O threads. Dividing the InnoDB buffer pool into multiple instances can improve Disk I/O. By doing so, you run your database more efficiently and faster. Here is a little help for you.

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How to set a good PHP realpath_cache_size

Code base / By /
get current PHP realpath_cache_size value

The PHP directive realpath_cache_size sets the size of the realpath cache to be used by PHP. Increasing realpath_cache_size might greatly improve PHP performance, as PHP states: “This value should be increased on systems where PHP opens many files.”. Therefore, setting a correct value for PHP realpath_cache_size can greatly improve PHP performance and optimize WordPress – and other CMS’s – websites.

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Convert MySQL MyISAM tables to InnoDB

MySQL / By /
High Performance MySQL

In the earlier days of MySQL, the default storage engine for your database tables was “MyISAM”. InnoDB is the engine to use now, and MyISAM is no longer actively developed. Therefore all MySQL optimizations are for InnoDB, and it’s recommended to switch from MyISAM to this InnoDB storage engine for your MySQL database tables. Follow this tutorial on how to convert from MyISAM to InnoDB.

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WordPress wp_options table autoload micro-optimization

WordPress / By /

Learn how to add an index and optimize WordPress’ wp_options table for faster database results. This probably isn’t a big issue, but today I noticed a slow MySQL query coming from a WordPress database (WordPress wp_options table). This made me investigate and to optimize the WordPress wp_options table “autoload” feature. The autoload feature loads and caches all autoloaded options, if available, or all options. The default option is to autoload, and over time when the wp_options table grows, this degrades performance.

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Configure SQLServer sessionState for Umbraco

Umbraco / By /
Umbraco Project Belle

Configure Umbraco for SQLServer sessionState storage, for your sessions. This post explains how to prepare your Umbraco website for a high performance web garden or web farm, and load balancing environments: Store your ASP.NET / Umbraco sessions out-of-process (OutProc). As opposed to the default in-process (inProc) sessions, where sessions are saved in the worker process.

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Optimize all MySQL tables with PHP/MySQLi multi_query

Code base / By /

The PHP MySQLi extension supports multiple queries, which are concatenated by a semicolon, with mysqli->multi_query. We use this to optimize all MySQL tables, in a single multi-query statement. Neat! Optimizing MySQL tables is important to keep tables small and fast. This boosts MySQL, PHP and website performance and we all love that, don’t we? :)

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