jm + aphyr + mongodb   2

Good advice on running large-scale database stress tests
I've been bitten by poor key distribution in tests in the past, so this is spot on: 'I'd run it with Zipfian, Pareto, and Dirac delta distributions, and I'd choose read-modify-write transactions.'

And of course, a dataset bigger than all combined RAM.

Also: -- the "Biebermark", where just a single row out of the entire db is contended on in a read/modify/write transaction: "the inspiration for this is maintaining counts for [highly contended] popular entities like Justin Bieber and One Direction."
biebermark  benchmarks  testing  performance  stress-tests  databases  storage  mongodb  innodb  foundationdb  aphyr  measurement  distributions  keys  zipfian 
december 2014 by jm
Call me maybe: Carly Rae Jepsen and the perils of network partitions
Kyle "aphyr" Kingsbury expands on his slides demonstrating the real-world failure scenarios that arise during some kinds of partitions (specifically, the TCP-hang, no clear routing failure, network partition scenario). Great set of blog posts clarifying CAP
distributed  network  databases  cap  nosql  redis  mongodb  postgresql  riak  crdt  aphyr 
may 2013 by jm

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