Interactive models of Spark, Delta Lake, and platform-specific behavior.

Adjust the inputs, run the operation, and watch what happens under the hood or on disk.

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Apache Spark Databricks Microsoft Fabric

Apache Spark · AQE

Spark shuffle partitions

Compare fixed reduce tasks with AQE coalescing and see why skew and oversized partitions still matter.

• Shuffle sizing
• Adaptive execution

Open simulator →

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Delta Lake Microsoft Fabric

Fabric · Spark · Delta Lake

Incremental liquid clustering

Compare full Z-Cube rewrites with Runtime 2.0 incremental selection and auto reclustering.

• Write amplification
• File skipping

Open simulator → Read the blog

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Delta Lake Databricks Microsoft Fabric

Delta Lake · Table Maintenance

Auto compaction

See when a successful write synchronously combines small files and how thresholds affect rewrite cost.

• Compaction
• Small files

Open simulator → Read the blog

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Delta Lake Databricks Microsoft Fabric

Spark · Delta Lake

Deletion vectors

See how deletion vectors minimize write aplification on top of immutable parquet files.

• Write amplification
• Logical deletes

Open simulator → Read the blog