Archive for "Site performance"
Dealing with permissions and security systems such as Security-Enhanced Linux (SELinux) is an issue that seems to challenge many developers. Some enterprise Linux distributions like Red Hat and CentOS come with SELinux enabled by default, but not knowing how SELinux works can lead developers to disable it. This is a mistake.
I recently did a performance review for a server setup running more than 200 websites. The infrastructure is hosted at Amazon Web Services (AWS). It contains multiple web servers behind multiple Varnish caching servers, uses Relational Database Service (RDS) for database storage, and uses Elastic File System (EFS) for storing assets like content images and documents. There were several areas of performance optimization to be done, which was a good development exercise and resulted in an improved user experience. Most importantly, though, the results also saved bandwidth; reduced the number of servers, number of CPUs, and amount of RAM required; and saved money! A faster site also improves SEO, which will drive more visitors / customers to your site, and will increase conversions.
Your eZ site might be serving megabytes of unnecessary image data on every page load. Do your users and your SEO rankings a favour: strip image metadata and set a reasonable image quality setting for your image aliases!
For one of our high-traffic clients, we switched the Content Delivery Network (CDN) from Akamai to Amazon CloudFront. This blog post looks at why we decided to change the CDN and describes the switching process. Plus we share some useful tips about how to configure CloudFront.
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