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Topic

Backfills

Backfills shows up across 3 courses in 2 layersof the data platform stack. Here's where it's taught, a free way to practice it, and what to learn next.

Where it's taught

⇄Ingestion & Transport

Backfill Strategies for Lakehouses

Partition-aware, idempotent backfills into Iceberg/Delta alongside live streams, with reconciliation.

10 ch · 3h 30m

1 free
⚙Orchestration & Pipelines

DAGs, Tasks, and the Scheduler Loop

The tool-agnostic vocabulary every orchestrator's docs assume you already know. DAG, task, operator, executor, sensor, scheduler heartbeat. Once you have these words, every orchestrator's docs read the same.

7 ch · 1h 28m

1 free

Building Pipelines That Don't Page You

Idempotency as a design choice, backfill as a first-class API, small DAGs with sharp edges, contract tests at the source, partitioning for the reader, dead-letter queues for data, where to put state, and how to design for a one-engineer team. The build-side answer to every failure mode in this stratum.

8 ch · 1h 29m

1 free

Related topics

↗idempotency↗partitioning↗airflow↗DAGs↗data contracts↗dead letter queue↗kappa architecture↗lambda architecture↗operators↗orchestration

Start learning backfills free

The first chapter of every course is free to read — no account needed.

Start: Backfill Strategies for Lakehouses →All strata
Petascale Labs

The physics layer of data

From byte-level storage to business-grade metrics. Built with depth, not breadth.

Curriculum

Data Engineer RoadmapAll strataStorage & File FormatsIngestion & TransportOpen Table FormatsCompute EnginesOrchestration & PipelinesQuery Engines & OLAPSemantic & Metrics LayerPII & Data Governance

Tools

All toolsParquet ViewerFreeSCD PlaygroundFreePII Masking GeneratorFree

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