Data Systems
data-intensive
bottleneck is data (amount/complexity/change), not CPU
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What a Data System PromisesData SystemsMore terms from this board
- accidental complexitycomplexity from the tools, not the problem
- failurewhole system stops
- fan-outreaching many targets from one op
- faultone part wrong
- fault-toleranta fault never becomes a failure
- load parameterthe number that describes load (e.g. fan-out)
- operability / simplicity / evolvabilitythe three faces of maintainability
- percentile pNN% of requests are faster
- response timewhat the client sees (service time + queueing + network)
- shared-nothingnodes share no memory/disk
- tail latencythe slow high-percentile requests
- vertical vs horizontalbigger box vs more boxes