December 2021
Beginner to intermediate
240 pages
6h 6m
English
Content preview from Mastering Apache Pulsar
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 12. Operating Pulsar
As you saw in Chapter 11, deploying Pulsar can take some effort, but how can we ensure its reliability once it’s deployed and in use? First, we need to be able to measure aspects of our system. Second, we need to understand the metrics in isolation. Third, we need to understand the interaction between metrics. And finally, we need to be able to understand when the preceding points deviate from our expectations. If we take a step back to consider everything required to operate a system successfully, it may be overwhelming to us. Fortunately, Pulsar makes metrics collection simple by providing a slew of metrics by default. This chapter will walk through those metrics and provide some context on which metrics are helpful to keep an eye on if you’re new to operating Apache Pulsar.
Before we explore each section, it’s essential to understand the types of metrics provided by Pulsar:
- Counter
- A counter is a cumulative metric, and it increases monotonically. Counters help visualize the total number of a metric occurring over a given duration.
- Gauge
- A gauge represents a single numeric value. Gauges are suitable for representing what is going on at the exact moment versus a historical look.
- Histogram
- A histogram is a sampled representation of observations. A histogram is suitable for getting counts of metrics in a specific bucket of time.
- Summary
- A summary is a histogram over a sliding window.
Apache BookKeeper Metrics
Apache BookKeeper is the storage engine ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.