Book: D&D of MOGs
Gradual 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: Book: D&D of MOGs1st beta of Vol. IV-VIOn.System ArchitectureDesign decisionsDistributed 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: Book: D&D of MOGs1st beta of Vol. IV-VIOn.System ArchitectureDesign decisions
Read moreOLTP. Compiling SQL Bindings.
November 28, 2016 by • “No Bugs” Bunny
Quote:
If we’re speaking about millions transactions per day over just a few hundred of different SQL statements – compiling those statements a million times (instead of a few hundred times) will be a dramatic waste of resources.
Another Quote:
Once upon a time, I observed the largest C++ file in my career – it was a 30’000-line file(!) consisting merely of ODBC bindings (and that was just for 300 or so SQL statements)
Filed under: Book: D&D of MOGs1st beta of Vol. IV-VIOn.System ArchitectureDesign decisions
Read moreHistorical Data in Databases. Audit Tables. Event Sourcing
November 21, 2016 by • “No Bugs” Bunny
Quote:
99% of reporting requests and 99.9% of analytics is purely historical
Another Quote:
Information within the audit table should be sufficient to validate/justify current state
Filed under: Book: D&D of MOGs1st beta of Vol. IV-VIOn.System ArchitectureDesign decisions(Re)Actors
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