Which caching proxy for the web reduces bandwidth by caching and reusing content?

Which caching proxy for the web reduces bandwidth by caching and reusing content?

• A. Nginx
• B. HAProxy
• C. Squid
• D. Varnish

Answer: (C)

The main idea is using a caching proxy to store copies of web content so repeated requests can be served from the cache instead of going all the way to the origin server, which saves bandwidth and speeds up access. Squid is the classic caching proxy designed specifically to cache and reuse web content. It sits as a forward or reverse proxy and stores copies of frequently requested web objects, serving them to clients directly from the cache on subsequent requests. This reduces the amount of data that must travel across the network and lowers upstream bandwidth usage, especially in environments with lots of repeated web traffic. Other options have related roles but aren’t the primary caching proxy function. Nginx is primarily a web server and reverse proxy that can do caching, but its core strength is serving and balancing web content rather than acting as a dedicated caching proxy. HAProxy focuses on load balancing and high availability rather than caching. Varnish is a high-performance HTTP accelerator that caches content as well, but Squid remains the most well-known tool specifically marketed as a caching proxy for web traffic, which aligns with the description in the question.

The main idea is using a caching proxy to store copies of web content so repeated requests can be served from the cache instead of going all the way to the origin server, which saves bandwidth and speeds up access.

Squid is the classic caching proxy designed specifically to cache and reuse web content. It sits as a forward or reverse proxy and stores copies of frequently requested web objects, serving them to clients directly from the cache on subsequent requests. This reduces the amount of data that must travel across the network and lowers upstream bandwidth usage, especially in environments with lots of repeated web traffic.

Other options have related roles but aren’t the primary caching proxy function. Nginx is primarily a web server and reverse proxy that can do caching, but its core strength is serving and balancing web content rather than acting as a dedicated caching proxy. HAProxy focuses on load balancing and high availability rather than caching. Varnish is a high-performance HTTP accelerator that caches content as well, but Squid remains the most well-known tool specifically marketed as a caching proxy for web traffic, which aligns with the description in the question.