New Posts
How to Configure Applications for High Availability in Kubernetes
Pods in Kubernetes are the smallest orchestration unit and are ephemeral by definition: Deployment/StatefulSet/DaemonSet/ReplicaSet updates or patches Nodepool downscaling (compaction) or upgrades (cordoned and drained)
A Brilliant Hack: Why does Layer 2/3 Checksum use 1’s Complement, Not 2’s
A super quick recap, one’s complement represents negative x by reverting every bit of x, while two’s complement negative x as one’s complement of x plus 1. Symbolically,
Service API Changes: Prefer Blue-green Update to Rolling Update
Summary To achieve zero-downtime service update, Kubernetes rolling update implies the API must be both forward and backward compatible. Forward compatibility is hard if at all makes sense. Blue-green update...
CD Tricks for Kubernetes Deployment + ConfigMap
It is common to extract the application configuration to a separate file as a runtime dependency of the container image that includes the application binary. As a result, the same...
JWT + Third-party Oauth in Single Page App
Imagine you run a single page app at example.com that communicates with backends over restful API and is authenticated with JWT tokens managed by you, but identities are managed by...
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