Learn how to create a lightweight REST API in Node‑RED that returns the server’s current time in JSON. Follow the prerequisites, wiring steps, verification commands, and troubleshooting tips to get a reliable /time endpoint.
I've got a fleet of Java Vertx servers behind a load balancer that handles spikey traffic. One minute it may be handling 150k r/m, the next it may be handling 2mm r/m, then right back down to 150k r/m. I'm finding that during these spikes, the entire fleet may become unresponsive for minutes and drop connections, while the cpu and mem pressure on any one box
AngularJS $http POST default Content‑Type header – version‑dependent behavior The $http service’s default Content-Type for POST requests changes between AngularJS releases. In 1.4.x the default is application/x-www-form-urlencoded , while 1.5.x and later switch to application/json . This shift is not prominently documented in migration guides, leaving develo
When building an Express API, I need to ensure that clients can detect when a cached representation has become stale and trigger revalidation without downloading the full payload. The goal is to configure responses with appropriate Cache-Control directives so that shared caches mark entries as stale after a defined period, yet still allow the client to send
What is the difference between a timeout and an HTTP 500 response? This Q&A focuses on interpreting the evidence before changing application or network settings.
Goal Determine why an AngularJS 1.x application’s $http requests are failing with a status of -1 and a statusText of "timeout" even though the server should respond within the configured timeframe. Constraints & Uncertainty The $http service is configured with a numeric timeout in milliseconds, but the actual request duration may vary across browsers and
Ensure that Envoy’s retry mechanism does not cause duplicate side‑effects when retrying non‑idempotent methods such as POST, PUT, or PATCH, even if the upstream has already processed the original request before the response was lost. Envoy currently retries based on status codes and retry_on settings without any built‑in deduplication, leaving the responsibi
I have microk8s v1.22.2 running on Ubuntu 20.04.3 LTS. Output from /etc/hosts : 127.0.0.1 localhost 127.0.1.1 main Excerpt from microk8s status : addons: enabled: dashboard # The Kubernetes dashboard ha-cluster # Configure high availability on the current node ingress # Ingress controller for external access metrics-server # K8s Metrics Server for API access
Integration goal Determine whether an authenticated SurrealDB HTTP session, established with a JWT and an active namespace and database scope, carries over to a WebSocket connection used for live-query subscriptions. SurrealDB provides a stateless HTTP endpoint and a stateful WebSocket endpoint. The same JWT can technically authenticate both transports, but