Tech watch

Observability

Understanding systems through logs, metrics, traces and events.

8 Nov 2026Repository

Reticle gives coding agents a verdict on the running app

GitHub preview card for the reticlehq/reticle repository, showing its name, a description of runtime perception for AI agents, a black icon, and counts for contributors, users, discussions, stars, and forks.

Reticle helps coding agents check what they actually built rather than stopping at the code change. The repository presents a runtime-perception tool for web and desktop apps; reticle compare drives two builds in a browser and reports differences users can see, network calls, and console errors.

Verification happens from outside the app, with no SDK required. The comparator can pit a main build against a pull request preview and, with --base, classify differences as regressions, missed targets, or changes.

AI Agents End-to-end testing Testing Observability

Divyanshu Shekhar

1 Nov 2026Article

Microsoft Agent Framework: choosing where to intercept calls

jesseliberty.comPermalink

Three basketball players illustrate a sequence: the first holds the ball, the second watches through binoculars, and the third shoots toward the hoop.

In Microsoft Agent Framework, ChatClient middleware intercepts messages exchanged with the LLM, while agent middleware operates on the agent’s overall run, including session, identity, or token-budget management. This distinction helps place logging or modification at the right level.

The C# example adds function-invocation middleware to log calls to the Researcher agent’s Tavily tool, without changing the other agents. The trace shows the function name and its arguments.

Microsoft Agent Framework AI Agents C#Observability

Found via C# Digest

28 Dec 2025Repository

Witr: trace the origin of a process or open port

github.comPermalink

Witr traces the startup chain behind a process, container or port. Its CLI and terminal interface help explain why a service is running before changing it.

Observability Developer Experience

13 Nov 2025Repository

Below: record and replay Linux resource usage

github.comPermalink

Below records process, cgroup and system resource data for inspection over time. Live, record and replay modes help investigate an incident after it occurs.

Linux Observability

29 Oct 2025Repository

Toolong: read, merge and search logs in the terminal

github.comPermalink

Toolong tails files, formats JSONL and merges logs by detecting timestamps. It brings several diagnostic operations together in a terminal interface.

Observability

28 Sept 2025Repository

Nightingale: centralize alert rules and routing

github.comPermalink

Nightingale connects sources such as Prometheus, Loki and PostgreSQL to an alerting engine. Rules, events and notification routing can be managed together in a self-hosted installation.

Observability Self-hosting

18 Jul 2025Tool

Mastra: build and observe agents in TypeScript

mastra.aiPermalink

Mastra combines tools, workflows, traces and evaluations for building TypeScript agents. The framework supports observing execution and improving behavior through experiments.

Mastra AI Agents TypeScript Observability Model Evaluation

24 Aug 2024Repository

LogTape: configurable logging across JavaScript runtimes

github.comPermalink

LogTape lets libraries emit logs while applications retain control of configuration. Its dependency-free implementation supports Node.js, Deno, Bun, browsers and edge functions.

Observability JavaScript

28 Sept 2023Repository

KRR: size pods using Prometheus measurements

github.comPermalink

KRR analyzes pod usage to recommend CPU and memory requests and limits. Its recommendations provide a measurement-based starting point for Kubernetes resource allocation.

Kubernetes Observability

27 Aug 2023Article

Collect .NET memory dumps in Kubernetes

cezarypiatek.github.ioPermalink

This tutorial walks through collecting a memory dump from a .NET application running in a pod. It provides a diagnostic workflow for investigating problems beyond application logs.

.NET Kubernetes Observability

@cezary_piatek

16 Aug 2023Article

Kuberhealthy: run synthetic checks inside Kubernetes

martinheinz.devPermalink

The article shows how to deploy Kuberhealthy, define checks and expose results to Prometheus. It provides a way to monitor actual service behavior from within the cluster.

Kubernetes Observability Testing

Martin Heinz

27 Jul 2023Article

Configure Kubernetes HPA with meaningful metrics

caiolombello.medium.comPermalink

This guide explains HPA behavior and the use of custom metrics to adjust replicas. It connects metric selection and resource limits to practical scaling behavior.

Kubernetes Observability

Caio Barbieri

6 Apr 2023Article

Right-size Kubernetes resources with Vertical Pod Autoscaler

code.egym.comPermalink

This guide explains how VPA adjusts resources using observed usage. It also discusses limitations when combining it with HPA, helping avoid conflicting scaling mechanisms.

Kubernetes Observability

Jean Mainguy