Shulou(Shulou.com)06/03 Report--

Comparative reading method

Generally, open source systems come with a user manual (Guide), which generally describes the core design ideas of the system, such as load balancing, clustering, leader election, persistence and so on. The comparative reading method is to read the code while comparing to the user's manual. Or, after reading one of the core designs in the user's manual, find the corresponding code and study how the code implements the design. In this way, it is not only easy to understand the source code, but also efficient and effective. Comparative reading is also suitable for comparing code and good comments in code.

Debugging verification method

Sometimes, open source systems do not necessarily come with a complete user manual, and the comments in the code are not complete, so the role of this part of the code can only be understood by reading the code itself. For complex logic, in order to verify whether the understanding is correct, you can verify it while debugging.

Unit testing method

Well-designed open source systems, the source code will be accompanied by perfect test cases. Test cases generally simulate some test data and verify a variety of different uses of a function. When test cases simulate test data and test configurations, Dummy implementations of persistence or serialization functions are generally used to replace the original implementation, which tells us what to do if we want to customize some implementations. It can be seen that by reading and debugging the unit test code, we can deeply understand the excellence of open source system design.

They are all personal opinions, for reference only.

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