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MaGe Linux Operations
MaGe Linux Operations
Jan 30, 2026 · Cloud Computing

Mastering Alibaba Cloud SLB: Build High‑Availability Load Balancing with Terraform

This guide walks through Alibaba Cloud SLB’s architecture, product variants, and environment prerequisites, and step‑by‑step Terraform provisioning for CLB, ALB, and NLB, covering health checks, HTTPS setup, traffic routing, performance testing, best practices, security hardening, monitoring, and disaster‑recovery procedures.

Alibaba CloudSLBTerraform
0 likes · 28 min read
Mastering Alibaba Cloud SLB: Build High‑Availability Load Balancing with Terraform
Mike Chen's Internet Architecture
Mike Chen's Internet Architecture
Dec 24, 2025 · Operations

How to Deploy a Two‑Location Three‑Center Disaster‑Recovery Architecture for High Availability

This guide explains the two‑location three‑center disaster‑recovery pattern, describing its purpose, typical deployment across two cities and three data centers, and step‑by‑step recommendations for same‑city dual‑active or primary‑backup setups, remote backup strategies, traffic routing, and essential monitoring.

GSLBOperationsSLB
0 likes · 5 min read
How to Deploy a Two‑Location Three‑Center Disaster‑Recovery Architecture for High Availability
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.

SLBci/cdcloud
0 likes · 13 min read
Cloud Stability Governance: Frontend and Backend Strategies, Deployment, and Monitoring Practices
Alibaba Cloud Developer
Alibaba Cloud Developer
Apr 1, 2024 · Operations

How We Achieved End-to-End Cloud Stability with Micro Frontends and Automated Deployments

This article details a comprehensive, front‑and‑back‑end approach to cloud stability, covering system architecture across private and public clouds, micro‑frontend integration, CI/CD pipelines, SLB routing, health‑check configurations, monitoring dashboards, data reconciliation, UI automation testing, and the resulting improvements in observability, gray‑release, rollback, and incident reduction.

AutomationMicro FrontendsSLB
0 likes · 14 min read
How We Achieved End-to-End Cloud Stability with Micro Frontends and Automated Deployments
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.

CDNSLBreliability engineering
0 likes · 19 min read
Bilibili CDN/SLB Outage Analysis and Cloud‑Edge Coordination Strategies
Programmer DD
Programmer DD
Jul 16, 2022 · Operations

How a Lua Bug Crashed Bilibili’s Load Balancer and the Lessons Learned

A detailed post‑mortem of the July 2021 Bilibili outage reveals how a Lua‑induced CPU spike in the OpenResty‑based SLB caused widespread service disruption, the step‑by‑step emergency response, root‑cause analysis, and the subsequent architectural and operational improvements to prevent recurrence.

IncidentResponseLoadBalancingLua
0 likes · 19 min read
How a Lua Bug Crashed Bilibili’s Load Balancer and the Lessons Learned
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.

IncidentLoad BalancerLua
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.

Load BalancerLuaRoot Cause Analysis
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.

Load BalancerRoot Cause AnalysisSLB
0 likes · 17 min read
Bilibili SLB Outage Postmortem (July 13, 2021): Timeline, Root Cause, and Improvements
IT Architects Alliance
IT Architects Alliance
Oct 31, 2021 · Operations

Mastering Rate Limiting: From SLB to Spring Cloud Gateway and Microservices

This article explains how to apply rate limiting at each layer of a modern service architecture—SLB, Nginx, Spring Cloud Gateway, and individual microservices—detailing traffic characteristics, interception methods, isolation techniques, and practical configurations to protect systems from overload, attacks, and cascading failures.

Circuit BreakingMicroservicesNginx
0 likes · 7 min read
Mastering Rate Limiting: From SLB to Spring Cloud Gateway and Microservices
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.

SLBcircuit breakergateway
0 likes · 6 min read
Principles and Practices of Rate Limiting Across SLB, Nginx, Spring Cloud Gateway, and Microservice Layers
Open Source Linux
Open Source Linux
Mar 2, 2021 · Operations

How SLB Works: Exploring Load Balancer Modes and Packet Flows

This article explains the background of Server Load Balancing (SLB), details its three transmission modes—reverse proxy, transparent, and triangle—illustrates packet interactions with TCP and HTTP flows, and provides analysis of each mode using Wireshark captures.

NetworkingSLBpacket analysis
0 likes · 11 min read
How SLB Works: Exploring Load Balancer Modes and Packet Flows
Open Source Linux
Open Source Linux
Feb 10, 2021 · Operations

How Different SLB Transmission Modes Shape Traffic Flow: A Deep Dive

This article explains the background of server load balancing (SLB), compares layer‑4 and layer‑7 implementations, and details three transmission modes—reverse proxy, transparent, and triangle—illustrating packet flows, configuration examples, and security considerations with diagrams and analysis.

Network TrafficSLBTCP handshake
0 likes · 11 min read
How Different SLB Transmission Modes Shape Traffic Flow: A Deep Dive
Liangxu Linux
Liangxu Linux
Jan 1, 2021 · Operations

How SLB Works: Reverse Proxy, Transparent, and Triangle Modes Explained

This article explains the background, three transmission modes of server load balancing (SLB), and detailed packet‑capture analysis for reverse‑proxy, transparent, and triangle modes, illustrating how traffic is rewritten and forwarded between clients, the load balancer, and real servers.

SLBload balancingnetwork analysis
0 likes · 12 min read
How SLB Works: Reverse Proxy, Transparent, and Triangle Modes Explained
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.

SLBnetworkpacket analysis
0 likes · 11 min read
Understanding SLB (Server Load Balancer) Transmission Modes and Packet Analysis
MaGe Linux Operations
MaGe Linux Operations
Dec 4, 2020 · Operations

Understanding SLB: How Reverse Proxy, Transparent, and Triangle Modes Work

This article explains the purpose of Server Load Balancing (SLB), describes its three transmission modes—reverse proxy, transparent, and triangle—detailing packet flows, TCP handshakes, and HTTP interactions captured with Tcpdump and Wireshark, and discusses security considerations for each mode.

SLBload balancingnetwork analysis
0 likes · 11 min read
Understanding SLB: How Reverse Proxy, Transparent, and Triangle Modes Work
21CTO
21CTO
Sep 6, 2017 · Cloud Computing

How Alibaba Cloud SLB Achieves High Availability Across Four Layers

This article explains Alibaba Cloud's Server Load Balancer (SLB) architecture and its four-tier high‑availability design—application processing, cluster forwarding, cross‑zone disaster recovery, and cross‑region disaster recovery—detailing both product features and user‑side best practices.

Alibaba CloudSLBcloud computing
0 likes · 12 min read
How Alibaba Cloud SLB Achieves High Availability Across Four Layers
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.

CtripInfrastructureOperations
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.

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