Cross-Origin Knowledge Every Backend Engineer Should Know

Cross-origin resource sharing (CORS) is a topic that backend engineers often find both familiar and confusing. Over the past two months, I have been involved in incubating an educational product as an architect, which gave me an unforgettable journey into cross-origin issues. This article shares my experiences and thoughts on cross-origin knowl ...

Posted on Thu, 27 Aug 2026 16:34:58 +0000 by pluto

Deep Dive into MySQL Index Architecture and Query Optimization

Index Architecture and Storage StructureIndexes function as sorted data structures designed to accelerate data retrieval operations such as queries, updates, and sorting. Conceptually, they operate similarly to a library catalog, allowing direct access to specific data locations without scanning the entire dataset. In the absence of an index, a ...

Posted on Thu, 21 May 2026 19:57:24 +0000 by johnnyk