They say you can’t be ‘up’ all the time, but when it comes to business-critical websites, you kind of have to be up… all the time. There is no foolproof way to avoid downtime completely, but knowing that it’s expensive - both in upfront costs (immediate costs of resource allocation and customer frustration) and in the longer term (revenue and loss of customers and their trust) - is ample incentive to avoid it at all costs.
Enter high availability
This is where high availability comes in. Used to ensure content redundancy and availability as well to maximize performance in its delivery, high availability is much more than a stopgap measure. It’s increasingly a key component of content delivery and performance strategies across industries globally.
VHA helps you to:
- Make your infrastructure more resilient: if the server fails, the entire site does not come crashing down
- Increase website performance: you can expect request latency to decrease by between 51% to 64%
- Protect your backend, with Varnish High Availability enabled, the backend offloading reflects a backend request decrease of between 55% to 67%
- Maximize your cache-hit ratio by replicating content across your caching layers
There is a whole lot more to it than this, and we’ve recently published a new white paper, Varnish High Availability: How to improve performance and ensure redundancy and resilience, to give you insights into how high availability works - and how it can work to ensure reliability, efficiency and resilience in your infrastructure and your business.