April 2020
Intermediate to advanced
292 pages
6h 50m
English
Content preview from Practical MicroservicesBecome 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,
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Defining Requirements
Simply put, a Message Store needs to provide two things with regard to writing messages:
- Persist append-only streams of immutable messages
- Provide optimistic concurrency control[26] on those streams
If you’re tired of developing software and are looking for an experience painful enough to convince you to quit, you technically could use something as simple as a flat text file with a little code sprinkled on top to model a Message Store. Now, as Jeff Goldblum’s character in Jurassic Park mused, just because one could do a thing does not mean one should, but hey, the option is there.
We’ll choose a different path, though, and we’ll use a Message Store built on top of a relational database, specifically PostgreSQL. RDBMSs are ...
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