<ul data-eligibleForWebStory="true"><li>Change Data Capture (CDC) tracks row-level changes and synchronizes data downstream in real-time.</li><li>Apache SeaTunnel CDC supports Snapshot Reading and Incremental Tracking synchronization methods.</li><li>SeaTunnel uses lock-free mechanisms for Snapshot Sync, splitting table data for parallel processing.</li><li>Snapshot splits in SeaTunnel contain metadata for routing and processing.</li><li>SeaTunnel's Incremental Synchronization captures real-time changes after the snapshot phase.</li><li>SeaTunnel ensures exactly-once processing during both snapshot and incremental sync phases.</li><li>During snapshot reading, SeaTunnel caches data and reconciles changes between low and high watermarks.</li><li>Before incremental sync, SeaTunnel validates snapshot splits and corrects inter-split data.</li><li>SeaTunnel employs the Chandy-Lamport algorithm for fault tolerance and checkpointing in distributed environments.</li><li>Markers in SeaTunnel CDC allow all nodes to store their state for recovery and pause-resume capabilities.</li></ul>

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