Meet the Bots That Review and Write Snippets of Facebook’s Code

Sapienz and SapFix are automated tools that Facebook now uses to find and fix problems across all of the company’s apps Facebook’s Getafix tool serves up templates for how to fix common coding errors to its SapFix system, which then recommends solutions to developers. A null pointer exception is like having the address to a […]

Cloud Native Computing Foundation Announces CoreDNS Graduation

SAN FRANCISCO, Calif., January 24, 2018 – The Cloud Native Computing Foundation® (CNCF®), which sustains open source technologies like Kubernetes® and Prometheus™, today announced that CoreDNS is the first project of 2019 to graduate, following last year’s graduations of Kubernetes, Prometheus, and Envoy. To move from the maturity level of incubation to graduation, projects must […]

Server Name Indication (SNI) Support Now in Ambassador

We’ve discussed many interesting use cases for SNI support within the edge proxy/gateway with both open source and commercially supported users of Ambassador. In a nutshell (and with thanks to Wikipedia), SNI is an extension to the TLS protocol which allows a client to indicate which hostname it is attempting to connect to at the […]

AI Blueprints: Implementing content-based recommendations using Python

In this article, we’ll have a look at how you can implement a content-based recommendation system using Python and the scikit-learn library. But before diving straight into this, it’s important to have some prerequisite knowledge of the different ways by which recommendation systems can recommend an item to users. Content-based: A content-based recommendation finds similar […]

Dockter: A Docker image builder for researchers

Dependency hell is ubiquitous in the world of software for research, and this affects research transparency and reproducibility. Containerization is one solution to this problem, but it creates new challenges for researchers. Docker is gaining popularity in the research community—but using it efficiently requires solid Dockerfile writing skills. As a part of the Stencila project, […]

Jaeger integration in Kiali

Kiali has the ability to show traces obtained from Istio. Jaeger collects traces for monitoring and troubleshooting microservices-based distributed systems, and both Istio and Kiali use the data that Jaeger provides. Originally this was done via a separate tab in the UI. But that turned out to be impractical. So the Kiali team has been […]

Lyft’s Envoy dashboards

I’ve given quite a few talks about observability in the age of the service mesh (most recent slides, unfortunately this talk series has not been recorded yet). Visibility into the inherently unstable network is one of the most important thing that Envoy provides and I’m asked repeatedly for the source of the dashboards that we […]

Optimising Prometheus 2.6.0 Memory Usage with pprof

There have been some reportsthat compaction was causing larger memory spikes than was desirable. I dug into this and improved it for Prometheus 2.6.0, so let’s see how. Firstly I wrote a test setup that created some samples for 100k time series, in a way that would require compaction. It would be nice to get […]

Help! Something is wrong with my Jaeger installation!

Jaeger is composed of different components, each potentially running in its own host. It might be the case that one of these moving parts isn’t working properly, causing spans to not be processed and stored. When something goes wrong, make sure to check the items listed here. Before everything else, make sure to confirm what […]