Mission Critical Transactions

An airhacks.fm conversation with Alejandro Pablo Revilla (@apr)
about: checkout episode with Alejandro: "#201 Write, Finish,
Improve-jPOS", JPOS vision, handling large loads and making changes
on the fly, connections to thousands ofr networking, circuit
breaking 20 years ago, jPOS EE - the extendible edition, The
Payment Platformn, "#72 KISS and No Dependencies in JGroups" with
Bela Ban, jdom - the XML parser, dependencies require care, Java
becomes better and better, being lazy and avoiding dependencies,
rejecting unnecessary dependencies, Java 1:1 mapping between a file
and a class is great, class injection without interfaces, quarkus /
Micronaut as lambda and dependency injection for free, interfaces
as defect, logging and realms, logging a context of a transation,
self-configurable logger with CDI, what happens inside a Point of
Sale (POS), the latency requirements, Transaction Manager uses
continuations, jPOS Transaction Manager on Project Loom evaluation,
jPOS is 100k LoC, jPOS Transaction Manager is 1k LoC, jPOS
implements two-phase commit protocol, jPOS uses BerkeleyDB for
checkpoint storage, the opinionated 2PC, continuations and reactive
programming, Project Loom and structured concurrency, virtual
threads and database connection pooling, the Hardware Security
Module (HSM) and Transaction Manager, cloud are more secure, hybrid
clouds, buying support for opensource software

Alejandro Pablo Revilla on twitter: @apr