Analyze the data cache design of large web systems together

1. Preface In a high-traffic web system, caching is almost inseparable; but it is not easy to design a proper and efficient caching solution; so next, we will discuss what should be paid attention to in the design of application system caching, including caching The selection of types, characteristics and data indicators of common cache systems, cache object structure design and invalidation strategy, and cache object compression, etc., in order to allow students in need, especially beginners, to quickly and systematically understand relevant knowledge. the 2. The bottleneck of the database 2.1 Data volume The amount of data in a relational database is relatively small. Taking our commonly used MySQL as an example, the number of data entries in a single table should generally be controlled within 20 million. If the business is complex, it may be lower. Even for large commercial databases like Oracle, the amount of data it can store is difficult to satisfy a large Internet system with tens of millions or even hundreds of millions of users. the 2.2 TPS In actual development, we often find that the bottleneck of relational databases on TPS is often exposed more easily than other bottlenecks, especially for large-scale web…