Consistent Hashing: How Distributed Systems Place Data
Consistent hashing explained: the hash ring, virtual nodes, and the rendezvous hashing alternative; the placement scheme that lets…
Category
System Design
Explore system design principles and strategies to build scalable, reliable, and high-performing software architectures for complex systems.
112 articles
What Is a Distributed System? Partial Failure, Clocks, and the Fallacies
What makes a system distributed: several machines cooperating over a network, partial failure as the defining property, no…
WAF in Modern Backends: Rules, Bypass Risks, and Defense in Depth
WAF in Modern Backends stops bad requests before your app. Learn rule design, false positives, logging, and how…
Rolling Deployments: Zero-Downtime Releases, Health Checks, and Rollback Planning
Rolling Deployments replace instances in small batches so users stay online. Learn health gates, batch size, and how…
SSRF Attacks and Defenses: URL Parsing, Allowlists, and Cloud Metadata
SSRF Attacks and Defenses stop your servers from fetching attacker URLs. Learn allowlists, DNS checks, metadata blocks, and…
SLOs for Backend Engineers: Defining, Measuring, and Enforcing Service Objectives
SLOs for Backend Engineers turn user pain into a clear number. Learn how to define, measure, and enforce…
SLIs Explained: Choosing the Right Service Level Indicators
SLIs Explained shows which signals match real user pain. Learn how to pick indicators for latency, errors, and…
Alerting That Works: Signal, Noise, and On-Call SLOs
Alerting That Works pages you for real user pain, not every small blip. Learn how to cut noise,…
Terraform in Production: Modules, State, Workspaces, and Drift Management
Terraform in Production covers modules, state, workspaces, and drift. Learn how state locks fail, how to split stacks,…
Rollback Strategies for Backend Systems: Blue-Green, Canary, and Database-Safe Reverts
Rollback Strategies for Backend Systems cover code, config, and data. Learn blue-green, canary, and when a database change…
Serverless Limits: Timeouts, Memory, Concurrency, and When Not to Use Serverless
Serverless Limits on time, memory, and concurrency shape every design. Learn the hard caps, the cost traps, and…
Cache Invalidation Strategies: Purges, Versioning, and Write-Through Choices
Cache invalidation strategies compared: delete-on-write, versioned cache keys, the cache purge, and write-through vs write-behind (plus the delivery…