Zero-downtime deployment ensures users experience no interruption when new code is released. This is a requirement for any production system […]
Chaos engineering is the discipline of experimenting on a production system to build confidence in its ability to withstand turbulent
Calendar and scheduling systems are among the most deceptively complex applications in software engineering. Google Calendar, Outlook, and Calendly handle
Distributed locks coordinate access to shared resources across multiple processes or machines. Unlike local mutexes, distributed locks must handle network
API design is the interface contract between your service and its consumers. Poor API design creates friction, breaking changes, and
Kubernetes networking enables communication between Pods, Services, and external clients across a cluster of machines. The Kubernetes networking model guarantees
Distributed tracing tracks a single request as it propagates through multiple microservices, capturing timing, errors, and context at each service
A connection pool maintains a set of pre-established connections to a resource (database, HTTP service, message broker) that can be
Database indexes are data structures that allow the database engine to find rows matching a query condition without scanning the
WebSockets provide full-duplex, persistent communication between a browser and server over a single TCP connection. Unlike HTTP request-response, either side
TCP and UDP are the two dominant transport-layer protocols underpinning all internet communication. TCP provides reliable, ordered, connection-oriented delivery with
Forward proxies, reverse proxies, and load balancers are often confused because they all sit between clients and servers in a
Garbage collection (GC) automatically reclaims memory occupied by objects no longer reachable from the application. The JVM provides multiple GC
Event sourcing stores the state of an application as a sequence of immutable events rather than the current state snapshot.
Storage tiering assigns data to different storage media based on access frequency: hot data (accessed frequently) lives on fast, expensive
