String Parsing for Data Engineers: Staff+ Level

Schema inference, record linkage, and the regex that took down Cloudflare.

Schema inference, record linkage, and the regex that took down Cloudflare.

Category

Python

Difficulty

advanced

Duration

25 minutes

Challenges

0 hands-on challenges

Topics covered: Spark String Parsing: regexp_extract vs UDFs, Schema Inference from Raw Text: System Design, Record Linkage at Scale: The n^2 Problem, The Cloudflare Incident: Catastrophic Backtracking in Production, Designing the Parsing Layer: Dead Letter Queues and Observability

Lesson Sections

1. Spark String Parsing: regexp_extract vs UDFs

2. Schema Inference from Raw Text: System Design

3. Record Linkage at Scale: The n^2 Problem

4. The Cloudflare Incident: Catastrophic Backtracking in Production

5. Designing the Parsing Layer: Dead Letter Queues and Observability