Koha Hacks: How to Install Memcached on Koha Library System (Running On Ubuntu 20.04LTS)
Is your Koha server taking too long to catalog or checkout items? Before you break the bank and purchase a bigger server with bucket-loads of RAM and processing power, install Memcached instead – you might just save yourself a lot of time and money!
Koha Hacks: How to Install Memcached on Koha Library System (Running On Ubuntu 20.04LTS)
Is your Koha server taking too long to catalog or checkout items? Before you break the bank and purchase a bigger server with bucket-loads of RAM and processing power, install Memcached instead – you might just save yourself a lot of time and money!
Enable caching with Memcached
Memcached works by storing data in your server’s RAM and serving requests from the memory cache instead of passing on queries to your database server. This speeds up your application (in this case, Koha) and reduces the load on your SQL database. To install Memcached on your Koha server, do the following (remember to backup your data before your start!):
1. Check if Memcached isn’t installed already
ps -A | grep memcached
If you get a response like 537 ? 00:10:52 memcached then Memcached is already installed and you can skip the installation. You can also go to Home > About Koha to check.
2. Install Memcached
sudo apt update
sudo apt upgrade
sudo apt install memcached
3. Configure Memcached in koha-conf.xml
Koha comes with the section for Memcached already configured but sometimes s!@% happens and you have to do it manually. Skip this section if the memcached section is properly configured.
sudo nano /etc/koha/sites/library/koha-conf.xml
where library is the name of your Koha instance. Around line 300 after the <!-- <zebra_loglevels>none,fatal,warn</zebra_loglevels> --> line, you should see the following
<memcached_servers>127.0.0.1:11211</memcached_servers>
<memcached_namespace>koha_library</memcached_namespace>
<template_cache_dir>/var/cache/koha/library/templates</template_cache_dir>
Add these lines if they are missing, replacing ‘library’ with your Koha instance name.
4. Enable and start Memcached
sudo systemctl start memcached.service
5. Check to see that Memcached is running.
Go to Home > About Koha page.
If you configured everything correctly, you should see the following highlighted in green line under Server Information:
Memcached: Servers: 127.0.0.1:11211 | Namespace: koha_demo | Status: running. | Config read from: koha-conf.xml
Tweaking Your Koha Library Server
Pro Tip: You should regularly check Koha’s Home > About Koha page. It gives you a quick overview of your server information. If there are any errors, missing applications or dependencies that might be slowing down your server, they will show up here. Now, read on to find out how to make the most of Koha library system.
Speed is of the essence in today’s world so it’s important you optimize your Koha library system server to ensure your patrons and staff can do their work quickly and efficiently. Let me if installing Memcached made a difference for you in the comments. And if you need help, don’t hesitate to get in touch.
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How to Install Koha Library System on Ubuntu Server 20.04 LTS
Koha is the most popular open source library management system in the world. Learn how to install Koha on Ubuntu Server 20.04 LTS and join thousands of libraries using Koha around the globe.
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