shuffle sharding

An AWS re:Invent 2018 talk on how AWS limits the blast radius of failures. It covers design techniques such as cell-based architecture and shuffle sharding.

Persi Diaconis explains on Numberphile the mathematics of card shuffling, including why seven riffle shuffles are needed to randomize a deck and how different shuffles compare.

A three-minute clip of magician Ricky Jay performing a card manipulation routine, including table faro shuffles. The routine builds in intensity and ends with a surprising finish.

Dan Robinson, then CTO of Heap, explains how Heap runs its product analytics backend on PostgreSQL and CitusDB. It covers conversion funnels, retention and cohort queries across tens of billions of events and 50 TB of data, plus Postgres and Kafka together and the indexing strategy.

A 2018 GDC panel where Raph Koster, Starr Long, Richard Garriott and Rich Vogel look back on what went right and wrong building and running Ultima Online. They share candid stories from the early days, including player behavior and server architecture.

Rick Houlihan's AWS re:Invent 2018 deep dive on advanced DynamoDB design patterns. It covers index overloading, GSI sharding, composite keys, graph processing and transactions.

An Ars Technica War Stories episode in which Richard Garriott and Starr Long describe Ultima Online's planned virtual ecology and how players wrecked it. Players slaughtered the animals and also broke the in-game economy.

A visualization and sonification of 15 sorting algorithms, from selection sort to bogo sort, run on shuffled integers in six minutes. Each algorithm gets a size and speed scaled to its complexity.

Numberphile's James Grime discusses highly composite numbers, nicknamed anti-primes, which have more factors than any smaller number, using 5040 as the central example. It touches on Plato and Ramanujan.

A five-minute lightning talk from React.js Conf 2016 by Elie Rotenberg on protecting the DOM from tampering. It shows how React tree obfuscation (react-armor) can shuffle class names, tags and tree structure to defeat CSS-selector-based ad blocking.

An AWS re:Invent 2019 session for advanced DynamoDB users on design patterns used by large customers, including Amazon retail. It covers GSI sharding, index overloading, graph processing, composite keys and transactional workflows.