Taylor's Life Log

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programmingAugust 9, 20267 min read

Sorting a File Too Big for Memory

I sorted 2.2 million rows two ways to see a classic computer-science trade-off in practice: use lots of memory and finish quickly, or use a little memory and take the scenic route through disk.

Language: RustDifficulty: beginner

data-engineering algorithms external-sort rust

programmingJune 13, 202614 min read

Stream Joins Without Joining: How Paimon Inverts the Problem

Keeping one always-current row per product, assembled in real time from five systems that never talk to each other, without drowning Flink in join state. How Apache Paimon moves the merge into the storage layer.

Language: SQLFramework: Apache PaimonDifficulty: advanced

flink paimon streaming data-engineering lsm-tree lakehouse

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Sorting a File Too Big for Memory

Stream Joins Without Joining: How Paimon Inverts the Problem