MySQL with MemCached

While the execution speed of your codebase can be a factor in the overall scalability of your application, more often than not, your database will become a bottleneck first. Modern web development environments can generally serve many page loads per second, and each of these pages will often make many requests to the database for fresh information. These pages may also be rendered by an easily expandable pool of web servers. While databases, including MySQL, are adequately designed to handle a significant number of queries, eventually, the load from all these requests can become too much to handle.
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