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IT Services Circle
IT Services Circle
Aug 29, 2025 · Backend Development

Why Smooth Weighted Round Robin Works: The Math Behind Balanced Load Distribution

This article explains the smooth weighted round robin algorithm, contrasts it with the non‑smooth version, walks through step‑by‑step examples for a 5:1:1 server weight scenario, and provides mathematical proofs of both weight correctness and smoothness, including references to the original source.

Distributed Systemsalgorithmload balancing
0 likes · 15 min read
Why Smooth Weighted Round Robin Works: The Math Behind Balanced Load Distribution
Model Perspective
Model Perspective
Dec 5, 2022 · Fundamentals

Can All Four Legs of a Chair Touch the Ground on an Uneven Surface? A Mathematical Proof

Exploring whether a chair with four equal-length legs can always rest evenly on a non‑flat surface, this article models the problem using coordinate transformations and continuity, applies the intermediate value theorem, and demonstrates that on a smooth curved floor the legs can indeed all touch simultaneously.

Geometrycontinuityintermediate value theorem
0 likes · 6 min read
Can All Four Legs of a Chair Touch the Ground on an Uneven Surface? A Mathematical Proof
WeChat Backend Team
WeChat Backend Team
Nov 30, 2016 · Fundamentals

Mastering Paxos: From Theory to Engineering in Large‑Scale Systems

This article explains the Paxos consensus protocol, its core concepts, step‑by‑step process, common misunderstandings, and rigorous inductive and contradiction proofs, while also discussing practical engineering considerations and how large‑scale systems like WeChat implement Paxos at billions of operations per minute.

Consensus AlgorithmEngineeringPaxos
0 likes · 13 min read
Mastering Paxos: From Theory to Engineering in Large‑Scale Systems