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PG + JSONB != MongoDB Series' Articles
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Intro to PostgreSQL with JSONB compared to MongoDB, a general purpose document database
Franck Pachot
Franck Pachot
Franck Pachot
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May 23 '25
Intro to PostgreSQL with JSONB compared to MongoDB, a general purpose document database
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postgres
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mongodb
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json
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document
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2 min read
No Index Only Scan on JSONB Fields (even on scalar)
Franck Pachot
Franck Pachot
Franck Pachot
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May 23 '25
No Index Only Scan on JSONB Fields (even on scalar)
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postgres
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mongodb
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json
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document
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4 min read
No Index for LIKE on JSONB with Array in the Path (GIN limitation)
Franck Pachot
Franck Pachot
Franck Pachot
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May 24 '25
No Index for LIKE on JSONB with Array in the Path (GIN limitation)
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mongodb
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postgres
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database
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index
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5 min read
No HOT updates on JSONB (write amplification) performance impact
Franck Pachot
Franck Pachot
Franck Pachot
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May 31 '25
No HOT updates on JSONB (write amplification) performance impact
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postgres
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document
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database
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mongodb
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7 min read
JSONB DeTOASTing (read amplification) when using PostgreSQL as a Document Database
Franck Pachot
Franck Pachot
Franck Pachot
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Jun 4 '25
JSONB DeTOASTing (read amplification) when using PostgreSQL as a Document Database
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postgres
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jsonb
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document
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database
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5 min read
Does PostgreSQL support as much "schema flexibility" as MongoDB? Not for indexing!
Franck Pachot
Franck Pachot
Franck Pachot
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Aug 12 '25
Does PostgreSQL support as much "schema flexibility" as MongoDB? Not for indexing!
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postgres
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json
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jsonb
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mongodb
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8 min read
Embedding Into JSONB Still Feels Like a JOIN for Large Documents
Franck Pachot
Franck Pachot
Franck Pachot
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Aug 24 '25
Embedding Into JSONB Still Feels Like a JOIN for Large Documents
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mongodb
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json
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database
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21 min read
JSONB vs. BSON: Tracing PostgreSQL and MongoDB Wire Protocols
Franck Pachot
Franck Pachot
Franck Pachot
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Dec 21 '25
JSONB vs. BSON: Tracing PostgreSQL and MongoDB Wire Protocols
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mongodb
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postgres
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network
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13 min read
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