~/talk

Optimal Observability

Talkat PyData Amsterdam 2025 · 2025-09-24..09-26· [observability, databases]
links:none on file
slides:none on file

Presents a concrete pipeline: define a BDR/BDP detection metric that accounts for counts, use inverse-harmonic-mean ordering plus moving-window agglomeration and pairwise feature-order flips, implement scalable steps as custom UDFs, and optimize for detection probability. Runs on payment data (about 100M transactions/day), cuts a 7M potential-series space to 7M→50k (configurable to 10k) homogeneous series, yields full coverage and more detected problems despite far fewer series, and notes tradeoffs: delivery complexity, alert duplication, and the need for healthy training data.

AI-written summary · about

  1. 0:00Introduction
  2. 2:32Aggregation in monitoring
  3. 5:02Fixed partitioning problems
  4. 11:43Optimal partitioning problem
  5. 15:59Detection rate optimization
  6. 23:23Scalable partitioning algorithm
  7. 27:14Results and benefits
  8. 30:02Implementation challenges
  9. 31:27Assumptions and final remarks
  10. 31:48Q&A
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