Archive of posts with category 'microservices'
Scaling Istio
Trim xDS config and metrics to stop istio-proxy OOMKills, and keep istiod alive through scale-outs with discoverySelectors, HPA tuning, and idle timeouts.
JWT + Third-party Oauth in Single Page App
Returning a JWT to a single page app after OAuth login: why session cookies and URL params fall short, and a tiny HTML page that saves it to localStorage.
Istio: Noninvasive Governance of Microservices on Hybrid Cloud
How Istio injects an Envoy proxy into each Kubernetes pod for canary releases, secure RPC, policy enforcement, and telemetry with no service code changes.
Killer Apps of Message Queues
When message queues beat RPC: absorbing traffic spikes with pull-based flow control, pub/sub to cut reverse dependencies, and async results for slow calls.
Session Consistency in Replicated Frontend Servers
Keeping HTTP sessions consistent behind a reverse proxy: gossip sync, consistent hashing, cookies, and why stateless frontends with durable storage win.
Pagination Ordered by Secondary Keys on Sharded Stores
Offset/limit breaks when a table is sharded by primary key but sorted by time or price. Three fixes: external merging, next-page only, and lookup twice.
Kip’s Warehouse: Building Scalable, Reliable, Consistent Web Application from the Ground Up
Building an inventory management app for Duke ECE labs with React, Node.js, Express and MySQL, and why Sequelize transactions became a debugging headache.
Service-Oriented Architecture: Why did Microservices Catch On
What a service tier fixes: duplicated SQL, cache changes forcing every server to upgrade, coupled library versions, and one full scan hogging the DB.
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