Red Hat and Fedora Leftovers
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The making of Creating ChRIS: Developing a distinct visual and narrative style
Casey Stegman, writer, Eric Kramer, animator, and Kieran Moreira, director, talk about finding inspiration and setting the tone during the creative process. Casey discusses how they developed the style of the film, Kieran walks through the decision to use specific video equipment to support the overall style, and Eric considers how the graphics were integrated.
We've included a snapshot of the conversation, but you can also listen to the full conversation with our embedded player or download the MP3.
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OperatorHub.io Operator Round-Up
In the few short weeks since Operator Hub launched, there have been many additions to the site’s trove of Kubernetes Operators. They offer services for your Kubernetes cluster ranging from etcd and CockroachDB, to Jaeger Tracing and Dynatrace. Like spring flowers, Operators have popped up from the open source community soil. We wanted to gather up all of our existing Operators Blog coverage and deep-dives into one post, today, in preparation for a significant uptick n the number of available Operators as spring turns into summer.
By the end of the summer, Operatorhub.io should be filled with Operators for all manner of services and enterprise-ready systems. Of course, you’ll be able to read about all those new additions here, where we’ll highlight newcomers along with deeper technical content when available. Before that happens, (and as we all know, software delivery estimation is really hard!) we wanted to round up all of the information we’ve thus far published on Operators to help you get up to speed with what’s already there before the fresh bloom of new software.
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ShadowReader: Serverless load tests for replaying production traffic
While load testing has become more accessible, configuring load tests that faithfully re-create production conditions can be difficult. A good load test must use a set of URLs that are representative of production traffic and achieve request rates that mimic real users. Even performing distributed load tests requires the upkeep of a fleet of servers.
ShadowReader aims to solve these problems. It gathers URLs and request rates straight from production logs and replays them using AWS Lambda. Being serverless, it is more cost-efficient and performant than traditional distributed load tests; in practice, it has scaled beyond 50,000 requests per minute.
At Edmunds, we have been able to utilize these capabilities to solve problems, such as Node.js memory leaks that were happening only in production, by recreating the same conditions in our QA environment. We're also using it daily to generate load for pre-production canary deployments.
The memory leak problem we faced in our Node.js application confounded our engineering team; as it was only occurring in our production environment; we could not reproduce it in QA until we introduced ShadowReader to replay production traffic into QA.
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New AppStream Validation Requirements
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Broadway adventures in Gtk4
One of my long running side projects is a Gtk backend called “Broadway”. Instead of rendering to the screen this backend creates a HTTP server that you can connect to, and then exposes the UI remotely in the browser.
The original version of broadway was essentially streaming image frames, although there were various ways to optimize what got sent. This matches pretty well with how Gtk 3 rendering works, particularly on Wayland. Every frame it calls out to all widgets, letting them draw on top of a buffer and then sends the final frame to the compositor. Broadway just inserts some image delta computation and JavaScript magic in the middle of this.
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Dilution and Misuse of the "Linux" Brand
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