Interaction to Next Paint is the newest of Google’s Core Web Vitals. The three metrics that make up the CWVs are Google’s attempt at defining proxy metrics for measuring things they believe are critical to a good user experience on the web. The three metrics are: Debugging and fixing these metrics can be quite complicated. In this post, I’m going to walk through how you can use Honeycomb for Frontend Observability to debug INP, which was just promoted to a stable Core Web Vital in March.

The best DevOps and SRE teams have shifted their approach to monitoring and logging their systems. These teams debug problems cohesively and rationally, regardless of the system’s complexity. Gone are the days of having a slew of logs that fail to explain the cause of alerts, system failures, and other unknowns.

Odds are that a software engineer today is really focused on one place: pre-prod. Short for “pre-production,” this is slang for an environment where software code operates in a prototype phase of its development lifecycle. Common sense would have one believe that this is a safe space, a workbench of sorts, where problems can be found and remediated.

At this point, it’s almost passé to write a blog post comparing events to the three pillars. Nobody really wants to give up their position. Regardless, I’m going to talk about how great events are and use some analogies to try to get that across. Maybe these will help folks learn to really appreciate them and to depreciate a certain understanding of the three pillars. Or maybe not.

One of the things about OpenTelemetry that’s easy to miss if you’re not spending the whole day in the ins and outs of the project is just how much stuff it can do—but that’s what I’m here for! Today, I want to go through the project and give you a guide to the various parts of OpenTelemetry, how mature they are, and what you can expect over the next six months or so. I ranked these elements by relative maturity across the entire project.

In 2016, we at Honeycomb first borrowed the term “observability” from the wikipedia entry for control systems observability, where it is a measure of your ability to understand internal system states just by observing its outputs. We then spent a couple of years trying to work out how that definition might apply to software systems. Many twitter threads, podcasts, blog posts, and lengthy laundry lists of technical criteria emerged from that work, including a whole ass book.

Engineering has come a long way since the days of delivering discrete, point-in-time products that were often packaged on a CD and shipped to customers. The days of physical media and long development cycles are long gone. The advent of cloud computing and the rise of Software-as-a-Service (SaaS) transformed the landscape, creating a new model of continuous development and service delivery. This shift has not only revolutionized how software is developed, but has also redefined the engineer’s role.

Sampling is a necessity for applications at scale. We at Honeycomb sample our data through the use of our Refinery tool, and we recommend that you do too. But how do you get started? Do you simply a set rate for all data and a handful of drop and keep rules, or is there more to it? What do these rules even mean, and how do you implement them? To answer these questions, let’s look at a rules file template that we use for customers when first trying out Refinery.

As part of our recent failure testing project, we ran into an interesting failure mode involving the OpenTelemetry SDK for Go. In this post, we’ll show you why our apps stopped sending telemetry for over 15 minutes and how we enabled keepalives to prevent this kind of failure from happening in the future.

Monitoring used to be so easy. Servers had names and lived down the hall, or across the street. If things weren’t working, you could turn them on and off again. Database filling up? Just throw another hard drive in there. Too many simultaneous requests? Rack another server and install a cache. Fast forward a couple decades, and things have gotten much more complicated.