Blog
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Lot 004 28 Sep 2026
FORGE: a shared ML platform from cloud to edge
How one AWS-native platform runs a scheduled ML pipeline, a memory-sensitive API, an edge workload and a conventional service without forcing them all into Kubernetes: six shared contracts, three planes that change at different speeds, and the failures that shaped them.
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Lot 003 28 Sep 2026
Treverse Recsys: temporal recommendations from learning to serving
How Haggle recommends items that may leave the auction before their history is useful: a temporal graph retriever, offline ranking, immutable releases, and a controlled experiment that raised sales per exposed buyer by 12.62%.
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Lot 002 28 Sep 2026
This site is a bucket and a CDN
Plain HTML in S3, CloudFront in front, one function to make the URLs clean. The whole setup for engineering.haggle.com.
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Lot 001 28 Sep 2026
Hello from Haggle Engineering
Why a small team running a live auction platform decided it was worth keeping a public notebook.
