leaflet.pub
a tool for shared writing and social publishing
fix bad migration perf
awarm.space
+9
-13
supabase/migrations/20260305100000_fix_profile_posts_performance.sql
+9
-13
supabase/migrations/20260305100000_fix_profile_posts_performance.sql
···
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-- Add missing indexes on document foreign keys used by get_profile_posts
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CREATE INDEX IF NOT EXISTS comments_on_documents_document_idx
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+
CREATE INDEX CONCURRENTLY IF NOT EXISTS comments_on_documents_document_idx
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3
ON public.comments_on_documents (document);
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-
CREATE INDEX IF NOT EXISTS document_mentions_in_bsky_document_idx
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CREATE INDEX CONCURRENTLY IF NOT EXISTS document_mentions_in_bsky_document_idx
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ON public.document_mentions_in_bsky (document);
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CREATE INDEX IF NOT EXISTS documents_in_publications_document_idx
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CREATE INDEX CONCURRENTLY IF NOT EXISTS documents_in_publications_document_idx
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ON public.documents_in_publications (document);
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-- Add a stored generated column to extract the DID from at:// URIs
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-- at://did:plc:xxx/collection/rkey -> did:plc:xxx
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ALTER TABLE public.documents
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ADD COLUMN identity_did text GENERATED ALWAYS AS (split_part(uri, '/', 3)) STORED;
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-
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-- Composite index for efficient profile post lookups: filter by DID, order by sort_date
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CREATE INDEX documents_identity_did_sort_idx
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ON public.documents (identity_did, sort_date DESC, uri DESC);
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-- Expression index to look up documents by DID without adding a column
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-- at://did:plc:xxx/collection/rkey -> split_part gives did:plc:xxx
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CREATE INDEX CONCURRENTLY IF NOT EXISTS documents_identity_did_sort_idx
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ON public.documents (split_part(uri, '/', 3), sort_date DESC, uri DESC);
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-- Rewrite get_profile_posts to use the new identity_did column
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-- Rewrite get_profile_posts to use the expression index
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CREATE OR REPLACE FUNCTION get_profile_posts(
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p_did text,
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p_cursor_sort_date timestamptz DEFAULT NULL,
···
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WHERE dip.document = d.uri
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LIMIT 1
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) pub ON true
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-
WHERE d.identity_did = p_did
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WHERE split_part(d.uri, '/', 3) = p_did
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AND (
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p_cursor_sort_date IS NULL
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OR d.sort_date < p_cursor_sort_date