This chapter gets into the meat of optimization once you identify and locate the performance problems. It covers a selection of the most common performance issues across a variety of areas and explains simple solutions to some of the mistakes people often make. When using these techniques, you'll look like a wizard to your clients and colleagues by quickly speeding up their software.
Topics covered in this chapter include the following:
- Network latency
- Select N+1 problems
- Disk I/O issues on virtual machines
- Asynchronous operations in a web application
- Performing too many operations in one web request
- Static site generators
- Pragmatic solutions with hardware
- Shrinking overly large images
Most of the problems in this chapter center on what happens when you add latency to common operations or when the throughput is reduced from what it was in development. Things that worked fine in tests, when everything was on one physical machine with minimal data, are now...