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Jeffrey Microscope for Generating Flame Graphs in Java

Jul 13th 2026, 14:00 by Petr Bouda

Java Flight Recorder (JFR) captures an enormous amount of detail about what your application is doing — but raw JFR files are only as useful as the tools you have to explore them. Jeffrey is an open-source JFR analyzer that specializes in turning JFR events into interactive visualizations, and Jeffrey Microscope is its standalone, single-user deployment: a self-contained application that lets you import recordings and dig into flamegraphs, timeseries, and other views right in your browser. Getting started takes a minute:

Standalone JAR – download the latest microscope.jar from the GitHub releases page and start it with java -jar microscope.jar (Java 25 or newer).
Docker – skip the setup entirely with docker run -it --network host petrbouda/microscope.
Sample recordings – if you want to explore the tool before profiling your own application, the petrbouda/microscope-examples image ships with sample recordings preloaded (docker run -it --network host petrbouda/microscope-examples).

In this article, we'll use Jeffrey Microscope to analyze JFR flamegraphs and walk through how they help you find where your application actually spends its time.

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Building Reliable Async Processing Pipelines Using Temporal

Jul 13th 2026, 13:00 by Akhil Madineni

Asynchronous processing pipelines are a cornerstone of modern distributed systems, but wiring them together reliably can be complex. A typical pipeline built with queues or message brokers requires custom retry logic, dead-letter queues, cron recovery jobs, and database status flags to ensure every step eventually succeeds.

Temporal replaces this heavy plumbing with durable workflows. In a Temporal workflow, the business logic of the pipeline is written as ordinary sequential code, yet it executes reliably across failures. The platform persists every state transition and step so that if a worker crashes or a network blip occurs, execution resumes exactly where it left off.

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Goodbye, Skeleton Keys: Why Machine Identity Broke IAM, and What SPIFFE Is Doing About It

Jul 13th 2026, 12:00 by Igboanugo David Ugochukwu

Cloudflare published its own forensic timeline of the Salesloft Drift breach down to the minute, and it's worth sitting with the detail for a second.

At 11:51 on August 9, 2025, an actor researchers track as GRUB1 tried to validate a stolen Cloudflare API token against the Salesforce API using TruffleHog's user-agent string — a tool built for finding leaked secrets, repurposed here to confirm one actually worked. That attempt failed. At 22:14, it didn't.

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