Varnish Cache
Varnish Cache is a high-performance, open-source HTTP accelerator and reverse proxy designed to speed up web applications by caching content in memory. It sits in front of web servers to serve cached content directly to users, reducing server load and improving response times. It is widely used for content delivery, API acceleration, and handling high-traffic websites.
Developers should learn and use Varnish Cache when building or maintaining high-traffic websites, e-commerce platforms, or APIs that require fast content delivery and scalability. It is particularly valuable for reducing backend server strain, improving user experience with lower latency, and handling traffic spikes efficiently, making it essential in performance-critical environments.