On.System Architecture
System Architecture (and it’s subfield Software Architecture) is a discipline which is surprisingly poorly covered. In a sense, it is still more an art than a science, and usually requires somebody intimately familiar with practical systems, to tell what’s to do and what’s to avoid when building a system.
IT Hares have lots of experience in both Software Architecture and more general System Architecture, and are trying to share their knowledge (and more importantly, their feelings) about them.
Production Crashes. Post-factum Debugging. Logging. Replayable Deterministic Re(Actors)
April 4, 2017 by • “No Bugs” Bunny
Quote:
I’ve seen game companies with hundreds of thousands of dollars lost per hour of unplanned server downtime.
Another Quote:
deterministic debugging is by far the best thing I have seen for production debugging.
Filed under: On.System Architecture(Re)ActorsBook: D&D of MOGs1st beta of Vol. IV-VIOn.ProgrammingDebugging
Read moreDeterminism: Requirements vs Features
December 26, 2016 by • “No Bugs” Bunny
Abstract:
Apparently, in practice there is big difference between cross-platform determinism and same-executable determinism, both in abilities they can provide, and from implementation complexity point of view
Quote:
Cross-platform determinism is the strictest definition of determinism I know; not surprisingly, there are quite a few factors which can break it
Filed under: On.System Architecture(Re)ActorsOn.ProgrammingTips and Tricks
Read moreGradual OLTP DB Development - from Zero to 10 Billion Transactions per Year and Beyond
December 13, 2016 by • “No Bugs” Bunny
Quote:
to make an efficient representation usable for OLAP – we need to modify our data on its way to OLAP replicas
Another Quote:
Each of the DB Server Apps is a replica master, but all replica targets are within the same Replica DB
Filed under: On.System ArchitectureDesign decisionsBook: D&D of MOGs1st beta of Vol. IV-VIDistributed systems(Re)Actors
Read moreRepresenting The Same Data Structure in SQL and NoSQL (from Classical Codd-style SQL to Key-Value NoSQL with SQL-with-XML and Structured NoSQL in between)
December 5, 2016 by • “No Bugs” Bunny
Quote:
while duplication MAY indeed improve performance – undue duplication also MAY hit performance pretty badly
Another Quote:
NoSQL will usually call for another denormalisation on top of what we’ve described above for SQL-with-XML.
Filed under: On.System ArchitectureDesign decisionsBook: D&D of MOGs1st beta of Vol. IV-VI
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