True costs of Running Varnish Cache

An overview of the challenges of running Varnish Cache and deciding its effectiveness when looking at Cache hit rates and miss rates. Along with the infrastructure costs.
www.section.io relieves this and gives you an insight into metrics and logs for what your Varnish is doing.

Transcript

1. True Costs of Running Varnish-Cache @section_io
2. Caching as a Performance Tool Implemented correctly, caching software such as Varnish Cache can: • Increase a website’s bandwidth and allow for additional headroom on the website • Improve the speed and response of websites to the http request from the users browser • Allow more traffic onsite and serve pages quicker
3. What are the costs involved? Cost of infrastructure to host your Varnish instances Cost to configure Varnish using professional services Cost to change the Varnish configuration if your website application changes Cost to change the web application to make sure Varnish works correctly Cost and effort involved to problem solve Caching issues and bugs when Varnish is live in your production environment Varnish Cache is open source and therefore it is free…isn’t it?
4. Session leakage Lack of effectiveness SSL? Hidden Costs
5. Session Leakage Risk of poorly implemented Varnish being responsible of user sessions being shared. • User X has their details cached • User X’s details get served to User Y This leads to: loss of trust bad publicity in social media loss of loss of business. This situation came around because of poor configuration of Varnish and lack of testing.
6. Lack of Effectiveness when problems occur…..features get turned off….. ….now Varnish is running on servers with no effective outcome on your HTML. Varnish is powerful. How effective is your Varnish config? Do you have metrics?
7. Lack of SSL The challenge of SSL is widely recognised as Varnish does not do SSL…. ….there are solutions available and there are plenty of articles written in to achieve this…. ….SSL needs to be considered.
8. How effective is your VCL config? What metrics are you using to measure the impact of your Varnish? How does Varnish fit into your development process? What Cache hit / miss ratio are you achieving? Are you using Varnish for static assets, html, dynamic html, video etc?
9. What is section.io With section.io you can: • Implement Varnish with no infrastructure or costs to deploy • See metrics on the effectiveness of your Varnish • Configure and test Varnish more effectively • Blend Varnish into your overall website development process • Incorporate your SSL WHY NOT SIGN UP FOR FREE NOW