January 2019
Beginner to intermediate
352 pages
8h
English
Content preview from Hands-On Cloud-Native Microservices with Jakarta EE
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3PC protocol
The 3PC protocol is an extension of the 2PC protocol, and its goal is to overcome its limits, which are related to its blocking nature.
One of the main features of this consensus protocol is that it is non-blocking; this doesn't mean that the participants are not blocked during processing, but it means that the protocol can proceed in spite of failures.
It consists of three phases; the prepare phase and the commit (or abort) phase are the same as those of the 2PC protocol.
However, it introduces a new phase, which we can define as a prepared state, where all of the participants of the transaction will define their statuses. The status can be either waiting or pre-commit. This means that the final phase can only have one, final ...
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