August 2020
Intermediate to advanced
216 pages
5h 50m
English
Content preview from Learning Dapr
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Chapter 1. Services
The basic computing unit in a Dapr-enabled application is a service. One of the goals of Dapr is to enable you to write these services in the way you like with the language of your choice. Dapr sits side by side with your services and brings in necessary capabilities such as state management, tracing, and secured communication when you need them. This chapter walks you through how various Dapr features came to be.
The World Before Cloud
Around the year 2000, I (Haishi) was working at a financial software company in San Francisco. On the second floor there was a server room, which required a special key card to access. The room was always freezing cold and noisy. It hosted everything the company needed to operate—domain controller, mail servers, file servers, source repositories, databases, test labs, and all the HR records. Other than the server racks, the room was filled with shelves of tapes stacked up to the ceiling. The company backed up the servers regularly, and all the backups were stored on these tapes. The room was also equipped with huge tanks of pure nitrogen gas, which would be released to save the room in case of fire.
The IT staff were very protective of the servers. And they were frequently annoyed by developers’ requests to deploy new service versions—after all, keeping the CEO’s mailbox working was a higher priority. Deploying a new version was a major operation: servers were backed up, databases were backed up, servers were patched, data ...
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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.