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Wukong Talks Architecture
Wukong Talks Architecture
Apr 4, 2024 · Operations

Cloud Stability Governance: Frontend and Backend Strategies, Deployment, and Monitoring Practices

This article presents a comprehensive view of cloud stability governance from both front‑end and back‑end perspectives, detailing system architecture, micro‑frontend integration, CI/CD deployment pipelines, SLB forwarding and health‑check configurations, monitoring dashboards, UI automation testing, and the resulting operational improvements.

CI/CDDeploymentMonitoring
0 likes · 13 min read
Cloud Stability Governance: Frontend and Backend Strategies, Deployment, and Monitoring Practices
Bilibili Tech
Bilibili Tech
Nov 17, 2023 · Operations

Bilibili CDN/SLB Outage Analysis and Cloud‑Edge Coordination Strategies

The August 4 2023 Bilibili outage, triggered by automatic back‑origin and domain‑disable policies that flooded the BFS load balancer with traffic, caused widespread white‑screens, but was mitigated within the 1‑5‑10 framework through rapid CDN switching, rate‑limit enhancements, storage backup, and client‑side fallback, illustrating the need for tighter cloud‑edge coordination.

Edge ComputingReliability EngineeringSLB
0 likes · 19 min read
Bilibili CDN/SLB Outage Analysis and Cloud‑Edge Coordination Strategies
Big Data Technology Architecture
Big Data Technology Architecture
Jul 14, 2022 · Operations

Postmortem of Bilibili SLB Outage on July 13, 2021

This postmortem details the July 13, 2021 Bilibili outage caused by a Lua‑induced CPU 100% bug in the OpenResty‑based SLB, describing the incident timeline, root‑cause analysis, mitigation steps, and the subsequent technical and process improvements to enhance reliability and multi‑active deployment.

IncidentLuaSLB
0 likes · 16 min read
Postmortem of Bilibili SLB Outage on July 13, 2021
High Availability Architecture
High Availability Architecture
Jul 12, 2022 · Operations

Postmortem of the July 13, 2021 Bilibili SLB Outage: Timeline, Root Cause, and Improvement Measures

This article details the July 13, 2021 Bilibili service outage caused by a Lua‑based SLB CPU spike, describing the incident timeline, root‑cause analysis of a weight‑zero bug, mitigation steps including new SLB deployment, and the subsequent operational and architectural improvements.

High AvailabilityIncident ResponseLua
0 likes · 17 min read
Postmortem of the July 13, 2021 Bilibili SLB Outage: Timeline, Root Cause, and Improvement Measures
Bilibili Tech
Bilibili Tech
Jul 12, 2022 · Operations

Bilibili SLB Outage Postmortem (July 13, 2021): Timeline, Root Cause, and Improvements

On July 13 2021 Bilibili’s L7 SLB crashed when a recent Lua deployment set a balancer weight to the string “0”, producing a NaN value that triggered an infinite loop and 100 % CPU, prompting emergency restarts, a fresh cluster rollout, and long‑term safeguards such as automated provisioning, stricter Lua validation, and enhanced multi‑active disaster‑recovery processes.

High AvailabilityIncident ResponseSLB
0 likes · 17 min read
Bilibili SLB Outage Postmortem (July 13, 2021): Timeline, Root Cause, and Improvements
Top Architect
Top Architect
Oct 13, 2021 · Backend Development

Principles and Practices of Rate Limiting Across SLB, Nginx, Spring Cloud Gateway, and Microservice Layers

The article explains how to apply rate‑limiting at each entry point of a distributed system—SLB, Nginx, Spring Cloud Gateway, and individual Java microservices—detailing traffic characteristics, limiting strategies, isolation techniques, and the role of circuit breaking to protect backend stability.

MicroservicesNginxRate Limiting
0 likes · 6 min read
Principles and Practices of Rate Limiting Across SLB, Nginx, Spring Cloud Gateway, and Microservice Layers
Top Architect
Top Architect
Dec 17, 2020 · Operations

Understanding SLB (Server Load Balancer) Transmission Modes and Packet Analysis

This article explains the background of Server Load Balancing (SLB), describes its three transmission modes—reverse‑proxy, transparent, and triangular—and provides detailed packet‑level analysis of TCP/HTTP interactions for each mode, highlighting configuration nuances and security considerations.

Load BalancingReverse ProxySLB
0 likes · 11 min read
Understanding SLB (Server Load Balancer) Transmission Modes and Packet Analysis
Efficient Ops
Efficient Ops
Sep 16, 2020 · Operations

Understanding SLB: How Server Load‑Balancing Modes Operate and Their Packet Flows

This article explains the background of Server Load Balancing (SLB), details its three transmission modes—reverse‑proxy, transparent, and triangle—and analyzes packet exchanges using Tcpdump and Wireshark to illustrate how client requests are processed and responses returned in each mode.

Load BalancingReverse ProxySLB
0 likes · 11 min read
Understanding SLB: How Server Load‑Balancing Modes Operate and Their Packet Flows
Ctrip Technology
Ctrip Technology
Jul 20, 2017 · Operations

Ctrip's Fourth‑Generation Architecture: Elastic Routing (SLB) and the TARS Release System

This article reviews Ctrip's two‑year architecture transformation, describing how the company replaced hardware load balancers with a software‑defined SLB, introduced application‑level grouping, multi‑update mechanisms, health‑check sharing, monitoring, and the TARS release platform to achieve faster, more reliable deployments.

CtripLoad BalancingRelease Management
0 likes · 16 min read
Ctrip's Fourth‑Generation Architecture: Elastic Routing (SLB) and the TARS Release System
Art of Distributed System Architecture Design
Art of Distributed System Architecture Design
Apr 8, 2015 · Cloud Computing

Practices in Building Distributed Technologies for Large‑Scale Cloud Computing Platforms

The article summarizes Dr. Zhang Wensong’s 2014 ArchSummit keynote on the challenges, architectural design, storage strategies, performance optimizations, monitoring, and future directions of Alibaba Cloud’s large‑scale distributed cloud computing platform, covering ECS, SLB, RDS, OCS and full‑link analytics.

Cloud ComputingDistributed StorageECS
0 likes · 17 min read
Practices in Building Distributed Technologies for Large‑Scale Cloud Computing Platforms