Consider it a temporary memory solution for your applications. Memcached enables you to reallocate memory from areas of your system that have an excess to those that are experiencing a shortfall. While the initial example shows a traditional deployment approach, it is inefficient because the total cache size only represents a small portion of your web farm's true capacity, and maintaining cache consistency across numerous nodes requires significant effort. With memcached, all servers draw from a unified virtual memory pool, simplifying operations. Furthermore, as your application's demand increases, necessitating the addition of more servers, there is typically a corresponding rise in the volume of frequently accessed data. A deployment strategy that allows these two components of your system to scale in tandem is a more logical and efficient approach. This synergy not only optimizes resource use but also enhances overall system performance.
