The complexity of software is an essential property, not an accidental one. Hence, descriptions of a software entity that abstract away its complexity often abstract away its essence. For three centuries, mathematics and the physical sciences made great strides by constructing simplified models of complex phenomena, deriving properties from the models, and verifying those properties experimentally. This worked because the complexities ignored in the models were not the essential properties of the phenomena. It does not work when the complexities are the essence.

— Fred Brooks

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#system-design

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Rate Limiting — mấy thuật toán mà backend dev nào cũng gặp

28 tháng 6, 2026 • Phong

Rate limiting không chỉ là chuyện 'chặn spam' — Token Bucket, Leaky Bucket, Fixed Window và Sliding Window có gì khác nhau? Bài này giải thích đơn giản, dễ hiểu.

system-design rate-limiting backend dev-tips

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