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Sep 28, 2026 · Operations

Why Auto-Rollback Fails at 10M QPS: The Missing Control Loop

This article details how to build reliable automated rollback systems for high-throughput architectures by establishing change identity, causal evidence through experiment/control groups, tiered rollback actions, state-machine execution, data compatibility matrices, verification budgets, and guardrails—progressing from manual processes to closed-loop autonomy.

Canary DeploymentGuardrailsIncident Response
0 likes · 37 min read
Why Auto-Rollback Fails at 10M QPS: The Missing Control Loop
Linux Tech Enthusiast
Linux Tech Enthusiast
Sep 27, 2026 · Operations

LVS vs Nginx: Layer 4 vs Layer 7 Load Balancing Trade-offs

This article compares LVS (Layer 4) and Nginx (Layer 7) load balancers, explaining why LVS achieves higher throughput by only inspecting IP headers while Nginx terminates TCP connections for HTTP-aware routing, health checks, and request retry — at the cost of added latency and configuration complexity.

LVShealth-checkshigh availability
0 likes · 11 min read
LVS vs Nginx: Layer 4 vs Layer 7 Load Balancing Trade-offs
Golang Shines
Golang Shines
Sep 26, 2026 · Operations

Complete Disk I/O Alert Troubleshooting: From Alert to Root Cause with 5 Real Cases

This article details a complete disk I/O alert investigation in production, covering core concepts like IOPS vs throughput, iostat/iotop analysis, and five real-world cases including MySQL missing indexes, log misconfiguration, backup conflicts, Redis persistence, and filesystem mount options, providing a reusable troubleshooting methodology.

AnsibleCapacity PlanningRedis
0 likes · 65 min read
Complete Disk I/O Alert Troubleshooting: From Alert to Root Cause with 5 Real Cases
MaGe Linux Operations
MaGe Linux Operations
Sep 26, 2026 · Operations

RAG System Operations: Vector Database Selection & Performance Tuning

This comprehensive guide covers end-to-end RAG system operations, from vector database selection and workload profiling to HNSW parameter tuning, filtering strategies, index freshness monitoring, embedding upgrades, capacity planning, backup validation, and troubleshooting methodologies with concrete examples and evaluation frameworks.

Backup RecoveryCapacity PlanningHNSW
0 likes · 64 min read
RAG System Operations: Vector Database Selection & Performance Tuning
liandk
liandk
Sep 26, 2026 · Operations

Nginx & API Gateway Troubleshooting: 10 Critical Production Faults Solved

This guide covers the top 10 Nginx and API gateway production faults—including 502/504 errors, retry storms, load imbalance, rate limiting failures, CORS issues, and 499 errors—with root cause analysis, configuration fixes, and a step-by-step SOP for rapid diagnosis and long-term prevention.

502 Bad Gateway504 Gateway TimeoutAPI gateway
0 likes · 13 min read
Nginx & API Gateway Troubleshooting: 10 Critical Production Faults Solved
Frontline Investigation
Frontline Investigation
Sep 26, 2026 · Operations

Why Decommissioned Systems Leave a 'Digital Tail' That Keeps Running

This article explains why decommissioned systems often leave behind active 'digital tails'—lingering APIs, accounts, and data connections—and argues that proper retirement requires three distinct farewells: business, operational, and evidentiary, moving beyond simple asset inventories to manage default trust and relationship context.

NIST CSF 2.0asset managementbusiness relationship exit
0 likes · 12 min read
Why Decommissioned Systems Leave a 'Digital Tail' That Keeps Running
Random Bulletin
Random Bulletin
Sep 25, 2026 · Operations

Automating Fault Isolation at 10M QPS: Evidence, Guardrails & Phased Autonomy

This article details a complete control-loop design for automatic fault isolation in 10M QPS systems, covering evidence-based detection, capacity-aware action planning, guardrails, phased rollout from shadow mode to autonomy, and evaluation metrics for speed, correctness, and safety.

Incident ResponseSREautomatic failover
0 likes · 41 min read
Automating Fault Isolation at 10M QPS: Evidence, Guardrails & Phased Autonomy
Ubuntu
Ubuntu
Sep 25, 2026 · Operations

Ubuntu 26.10 Rewrites OOM Killer Rules: Protect Desktop, Kill Apps First

Ubuntu 26.10 adjusts OOM scores to prioritize killing applications over critical desktop services like GNOME Shell and D-Bus, disables systemd-oomd for user sessions, and provides immediate workarounds like zram and manual OOMScoreAdjust.

D-BusGNOME ShellLinux kernel
0 likes · 13 min read
Ubuntu 26.10 Rewrites OOM Killer Rules: Protect Desktop, Kill Apps First
Raymond Ops
Raymond Ops
Sep 24, 2026 · Operations

Master LVM from Zero: Complete Guide to Logical Volume Management, Expansion, Snapshots & Migration

This comprehensive guide covers LVM fundamentals (PV/VG/LV/FS), PE/LE concepts, metadata management, and practical scenarios including online expansion, dangerous shrinking, disk migration via pvmove, snapshot backups, cache/thin provisioning, metadata recovery, and production best practices with exact commands and rollback procedures.

LVMLinux storagedisk expansion
0 likes · 66 min read
Master LVM from Zero: Complete Guide to Logical Volume Management, Expansion, Snapshots & Migration
Data Bricklaying Diary
Data Bricklaying Diary
Sep 24, 2026 · Operations

Observability Isn't a Log Platform: Connecting Business Goals to Verifiable Runtime Facts

This article explains that observability is not centralized logging but a practice of defining business outcomes (SLIs/SLOs), correlating metrics, logs, and traces via stable business identifiers, designing actionable alerts, structuring dashboards along business flows, separating observability responsibilities, halting automation when evidence is unreliable, and using runtime data to continuously correct architectural assumptions.

AlertingMetricsObservability
0 likes · 28 min read
Observability Isn't a Log Platform: Connecting Business Goals to Verifiable Runtime Facts
Random Bulletin
Random Bulletin
Sep 24, 2026 · Operations

Second-Level Fault Mitigation at 10M QPS: From Minutes to Seconds

This article details how to achieve second-level fault mitigation in 10M QPS systems by building a closed-loop control system with layered signals, tiered actions, independent control planes, pre-authorized automation, automated verification, blast radius management, and progressive drills, moving beyond manual response to automated risk convergence.

Incident ResponseMTTMSRE
0 likes · 38 min read
Second-Level Fault Mitigation at 10M QPS: From Minutes to Seconds
Linux Tech Enthusiast
Linux Tech Enthusiast
Sep 24, 2026 · Operations

18 Production-Ready Shell Scripts for Daily Sysadmin Tasks

This article presents 18 practical shell scripts for common system administration tasks including file consistency checks, log rotation, network traffic monitoring, FTP downloads, user input validation, Nginx 502 error auto-recovery, port scanning, batch file renaming, IP blocking, and IP address validation.

automationbashfile operations
0 likes · 36 min read
18 Production-Ready Shell Scripts for Daily Sysadmin Tasks
Efficient Ops
Efficient Ops
Sep 23, 2026 · Operations

Uptime Kuma Review: 77.7K Stars, Lightweight Self-Hosted Monitoring Setup

This article reviews Uptime Kuma, a lightweight open-source self-hosted monitoring tool with 77.7K GitHub stars, detailing its multi-protocol monitoring, 90+ notification channels, 20-second check intervals, and providing step-by-step installation guides for Docker Compose and manual Node.js deployments with PM2 process management.

DockerNode.jsOpen Source
0 likes · 5 min read
Uptime Kuma Review: 77.7K Stars, Lightweight Self-Hosted Monitoring Setup
Tencent Technical Engineering
Tencent Technical Engineering
Sep 23, 2026 · Operations

How an AI Agent Cuts Error Code Triage from Hours to Minutes: Three Practices

This article details how an AI Agent on an orchestration platform automates error code root cause analysis by integrating knowledge bases, code graphs, observability data, and code hosting platforms, achieving 88% consistency with human annotations and zero hard conflicts across 50 test cases through a five-step investigation workflow, dual-path JSON parsing, and regression-tested prompt optimization.

AI AgentAgent OrchestrationError Code Troubleshooting
0 likes · 26 min read
How an AI Agent Cuts Error Code Triage from Hours to Minutes: Three Practices