CDN System Design: How Content Delivery Networks Work
How edge servers, anycast routing, and tiered caching move content close to users, cut latency, and protect your origin at global scale
Search across 247 posts, 23 explainers, and 83 topics
How to Use Cursor: 12 Tips to 10x Your Productivity
A practical guide to using Cursor, the AI code editor: master Tab, Cmd+K, Chat, Agent, Plan Mode, Rules, Skills, and MCP to ship code faster
Cursor Skills: How to Create and Use Agent Skills
A practical guide to Cursor Agent Skills: write your first SKILL.md, scope it with paths, add scripts, and ship reusable workflows your AI agent runs on demand
Leader and Followers Pattern in Distributed Systems
How one elected leader coordinates replication so a cluster stays consistent and survives node failures
Git Flow vs GitHub Flow
How each Git workflow handles features, releases, and hotfixes, and how to pick the one that fits your team
Idempotent Receiver Pattern in Distributed Systems
Why clients retry, how duplicate requests sneak in, and how to build a receiver that processes the same request twice without breaking anything
ULID Explained: How Sortable Unique IDs Work
Why teams pick ULIDs over UUIDs for database keys, and how to generate and decode them
Auth0 vs Okta: How to Pick the Right Identity Platform
Two products, one parent company, very different jobs. Pricing, SDKs, SSO, SAML, MFA, and when each one is the right call.
Notification System Design: Push, SMS, Email at Scale
The architecture behind Slack alerts, Uber ride pings, and every order confirmation email that lands on time
PostgreSQL MVCC and Autovacuum Explained
How dead tuples cause table bloat, why default autovacuum settings fall behind on busy tables, and how to tune it for high-traffic production workloads
Lease Pattern in Distributed Systems Explained
How time-bound leases give cluster nodes exclusive access without holding it forever when things go wrong
Flash Sale System Design: Architecture, Scale, and Oversell
The architecture behind Flipkart Big Billion Days, Xiaomi drops, Alibaba Singles' Day, and every Black Friday landing page that does not melt
What Is a GUID? How to Generate One in C# and SQL Server
What a GUID is, how the format works, and how to generate a GUID in .NET, SQL Server, and PowerShell
