strategy

Strategy

Strategy Patterns allows code to select an algorithm at runtime.

Code

Cache allows users to get and put data identified by a key. We implement Cache with disk and with memory, called DiskCache and MemoryCache. The program decides which to use based on the size of the file - if it's big, it uses DiskCache; otherwise, MemoryCache.

Reference

• https://en.wikipedia.org/wiki/Strategy_pattern
• https://stackoverflow.com/questions/370258/real-world-example-of-the-strategy-pattern