🍃🎓 SPRING CERTIFICATION QUESTION: What is the security filter chain?

Answer:

𝐹𝑖𝑙𝑡𝑒𝑟𝐶ℎ𝑎𝑖𝑛𝑃𝑟𝑜𝑥𝑦 maintains a list of 𝑆𝑒𝑐𝑢𝑟𝑖𝑡𝑦𝐹𝑖𝑙𝑡𝑒𝑟𝐶ℎ𝑎𝑖𝑛 objects each of which is capable to decide whether it should be applied to a web-request or not.

The first filter-chain which matches the request is responsible for its processing.

Internally 𝑆𝑒𝑐𝑢𝑟𝑖𝑡𝑦𝐹𝑖𝑙𝑡𝑒𝑟𝐶ℎ𝑎𝑖𝑛 is itself a list of 𝐹𝑖𝑙𝑡𝑒𝑟 objects plus single instance of 𝑅𝑒𝑞𝑢𝑒𝑠𝑡𝑀𝑎𝑡𝑐ℎ𝑒𝑟 which actually performs url-matching.

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A Custom Filter in the Spring Security Filter Chain👉 https://www.baeldung.com/spring-security-custom-filter