Databricks clarifies four major misconceptions about LTAP
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Databricks published an article clarifying four common misconceptions about LTAP, stating that LTAP is not CDC replication but a tiered architecture with the lake as the sole persistent copy and multiple layers of caching in front. Databricks says LTAP retains both Postgres heap pages and Parquet as two lossless encodings, serving point lookups and scans respectively, with indexes remaining in the hot tier.
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- Databricks BlogDispelling LTAP myths
This post rebuts four common misconceptions about LTAP: that it is CDC replication, that a single copy forces slow lookups or scans, that open table formats mean eventual consistency, and that Postgres logical replication suffices. It argues Lakebase keeps one logical table with the lake as its durable tier and caches in front of it, so no layer adds a second catalog or source of truth. Each myth is traced to the same misunderstanding of treating every materialization of the data as a second database.
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