Learn How Cache Works (Part 3)

This guide covers learn how cache works (part 3) with practical context and easy-to-follow details. Use it to understand the subject and apply the information confidently.

Learn how cache works (Part 1)

Learn how Cache works (Part 2)

Figure 5: How to organize L2 memory cache 512 KB

Memory cache can work under three different configuration types: direct mapping, global linking and link aggregation (in multiple lines). Direct mapping Direct mapping is the simplest way to create a memory cache. In this configuration, the main RAM memory is divided into equal lines located inside the Memory Cache. If we have a 1GB RAM system, this 1GB will be divided into 8, 192 blocks (assuming that the Memory Cache uses the configuration we described above), each block has 128KB (1, 073, 741, 824 / 8, 192 = 131. 072 - note that 1GB is 2 ^ 30 bytes, 1 MB is 2 ^ 20 bytes and 1 KB will be 2 ^ 10 bytes). If your system has 512MB then the memory will also be divided into 8, 192 blocks but each of these blocks is only 64 KB. We have demonstrated how this is organized in Figure 6 below.

Figure 6: How to map the cache work directly

Learn how cache works (End section)