The deploy was two days old, and the metrics had been calm the whole time. The moment we turned off the cache refresh batch, ad serving stopped. A retrospective on the missing verification of what a deploy actually changed.
Container orchestration basics and what backend developers need to know: core objects, networking, scaling with HPA, and operational essentials.
Go’s concurrency model builds on CSP, providing Goroutines and Channels as core tools. An overview of how each works and when to choose what.
Why MongoDB and Redis end up in different roles even under the same NoSQL umbrella. A comparison across data model, storage, schema, scaling, and use cases.
Spring MVC assigns one thread per request. When I/O waits pile up, threads sit idle. WebFlux replaces this with an event loop-based non-blocking model. A summary of the structural differences from MVC, the Reactor pattern, and when to choose which.
HTTP/1.1 processes requests and responses sequentially. HTTP/2 changed this with multiplexing, binary framing, and header compression. A summary of the differences between the two protocols and gRPC, which runs on top of HTTP/2.
Covers container concepts, the differences from VMs, Docker’s architecture, and the basics of Dockerfile and Docker Compose.
The difference between splitting code by technical layers (horizontal) and by features or domains (vertical). Trade-offs and selection criteria for each approach.
Nest.js provides a DI container and Module system at the framework level in the Node.js ecosystem. A summary of its core design principles: IoC, DI, Module, and Provider.
Layered architecture separates code into horizontal layers by technical responsibility. A summary of the four-layer structure, dependency direction rules, and how DIP decouples layers.