In this tutorial, we will see how a Ruby interpreter with different servers performs under load. The tutorial steps assume a fresh Ubuntu 13.10 x32 image. The results were obtained from a 512 MB droplet.
ngx_pagespeed, or just pagespeed, is an Nginx module designed to optimize your site automatically by reducing the size of its resources and hence the time the clients’ browsers need to load it.
Continuous use of SSDs results in degraded performance if not accounted for and mitigated. The TRIM command is an operation that allows the operating system to propagate information down to the SSD about which blocks of data are no longer in use. This allows the SSD’s internal systems to better manage wear leveling and prepare the device for future writes. Continuous TRIM is possible, but can negatively impact performance. Scheduled, periodic TRIM is a good alternative in most cases.
Apache mod_spdy is an open source Apache module that allows Apache web servers to serve HTTPS requests using the SPDY protocol. SPDY (pronounced as “SPeeDY”) is a new protocol created to address speed related problems with the HTTP protocol; it allows the client and server to pass multiple requests over a single connection, compress request and response headers, and all the server to push site resources to the client without the client requesting them.
ProxySQL is a SQL-aware proxy server that can be positioned between your application and your database to create a caching layer to optimize MySQL queries. In this tutorial, you will use ProxySQL to set up transparent caching for a MySQL server on Ubuntu 16.04. You will then test its performance using mysqlslap with and without caching to demonstrate the effect of caching and how much time it can save when executing many similar queries.
HAProxy is an open source software which can load balance HTTP and TCP servers. In the previous article on HAProxy we configured load balancing for HTTP and in this one we’ll do the same for MySQL. All your MySQL servers have to be configured to perform Master-Master replication as load balancing involves both reading and writing to all the backends.
Memcached as a standalone server works as an intermediary in front of the MySQL client access layer and manages information only in the memory without an option to store it persistently. This makes it suitable for tasks such as caching the results of duplicate MySQL queries. In this article, memcached will be installed as a MySQL plugin and tightly integrated into MySQL. It will provide a NoSQL style access layer for managing information directly in regular MySQL InnoDB tables.
Redis is an open-source key value store that can operate as both an in-memory store and as cache. Redis is a data structure server that can be used as a database server on its own, or paired with a relational database like MySQL to speed things up.
Apache is the most popular web server in the world. This guide discusses several modules that may help you get the most out of your server.
Query cache is a prominent MySQL feature that speeds up data retrieval from a database. In this tutorial, you will first configure MySQL without query cache and run queries to see the duration results. Then you’ll set up query cache and test your MySQL server with it enabled to show the difference in performance.
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