docs(pgd): require RI FULL on TOAST-bearing tables#7176
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Document the divergence risk when concurrent updates touch different TOAST columns on tables with REPLICA IDENTITY DEFAULT / USING INDEX, and recommend REPLICA IDENTITY FULL as the mitigation. Add the 1 GB total-TOAST limitation that RI FULL does not solve, so operators don't expect it to enable replication of arbitrarily large rows. Covers PGD 4.4, 5.6, 5.7, 5.8, 5.9, 6, 6.1, 6.2, 6.3 with version-appropriate wording: PGD 6.x notes BDR_AUTO default with an override warning; PGD 5.x requires explicit opt-in; PGD 4.4 uses the legacy appusage.mdx structure; PGD 6.3 adds a bullet to planning.mdx. BDR-6868
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Document the divergence risk when concurrent updates touch different TOAST columns on tables with REPLICA IDENTITY DEFAULT / USING INDEX, and recommend REPLICA IDENTITY FULL as the mitigation. Add the 1 GB total-TOAST limitation that RI FULL does not solve, so operators don't expect it to enable replication of arbitrarily large rows.
Covers PGD 4.4, 5.6, 5.7, 5.8, 5.9, 6, 6.1, 6.2, 6.3 with version-appropriate wording: PGD 6.x notes BDR_AUTO default with an override warning; PGD 5.x requires explicit opt-in; PGD 4.4 uses the legacy appusage.mdx structure; PGD 6.3 adds a bullet to planning.mdx.
BDR-6868
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Draft deployment: https://deploy-preview-7176--edb-docs-staging.netlify.app/docs/