July 2020
Beginner to intermediate
321 pages
9h 10m
English
Content preview from Building Event-Driven Microservices
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. Lightweight Framework Microservices
Lightweight frameworks provide similar functionality to heavyweight frameworks, but in a way that heavily leverages the event broker and the container management system (CMS). Unlike heavyweight frameworks, lightweight frameworks have no additional dedicated resource cluster for managing framework-specific resources. Horizonal scaling, state management, and failure recovery are provided by the event broker and the CMS. Applications are deployed as individual microservices, just as any BPC microservice would be deployed. Parallelism is controlled by consumer group membership and partition ownership. Partitions are redistributed as new application instances join and leave the consumer group, including copartitioned assignments.
Benefits and Limitations
Lightweight frameworks offer stream processing features that rival those of heavyweight frameworks, and in a number of cases, exceed them. Materialization of streams into tables, along with simple out-of-the-box join functionality, makes it easy to handle streams and the relational data that inevitably ends up in them. Note that while table materializing functionality is not unique to lightweight frameworks, its ready inclusion and ease of use are indicative of the complex stateful problems that lightweight frameworks can address.
The lightweight model relies upon the event broker to provide the mechanisms for data locality and copartitioning through the use of internal event streams. ...
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.