pgvectorscale
Shares rank 11 of 14 Postgres extensions by recommenders
People recommend this free, open-source Postgres extension for performance and scale beyond pgvector, but it is not available on RDS.
People recommend this free, open-source Postgres extension for performance and scale beyond pgvector, but it is not available on RDS.
12 people gave an opinion
- recommend it
- 7
- criticize it
- 5
- approval share
- 58%
Recommended in 4 of 13 months
- November 2025: recommended
- December 2025: recommended
- January 2026: not recommended
- February 2026: not recommended
- March 2026: not recommended
- April 2026: not recommended
- May 2026: not recommended
- June 2026: not recommended
- July 2026: not recommended
- August 2026: recommended
- September 2026: not recommended
- October 2026: recommended
- November 2026: not recommended (month in progress)
Why it doesn’t carry the badge
- 7 people recommend itNeeds 10 or more, not met.
- 1.4 recommenders for every criticNeeds 2 to 1 or better, not met.
- Recommended in 4 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
What people warn about
Each mark is one comment
Not available on RDS
“pgvectorscale is not available in RDS so this wasnt a great solution for us”
Comment from 3 Nov 2025 in “The Case Against PGVector” “it looks like a good solution, but it's not available on RDS”
Comment from 3 Nov 2025 in “The Case Against PGVector” “the main issue with pgvectorscale is that it's not available in RDS”
Comment from 30 Dec 2025 in “Postgres extension complements pgvector for performance and scale” Recall can be unpredictable or degrade
“portions of the graph could become unreachable, causing recall to degrade”
Comment from 14 Oct 2026 in “Pg_vectorsearch: An index that is faster than pgvector's IVFFlat and HNSW” “We weren't happy with the unpredictable recall performance of pgvectorscale”
Comment from 14 Oct 2026 in “Pg_vectorsearch: An index that is faster than pgvector's IVFFlat and HNSW”
Other Postgres extensions people recommend
The four most recommended other Postgres extensions, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
See all 14 Postgres extensions, rankedWhat people said
13 of the 14 comments that mention it, newest first. Each links to the original comment.
“We weren't happy with the unpredictable recall performance of pgvectorscale”
“seems to be unmaintained now”
“portions of the graph could become unreachable, causing recall to degrade”
“They also fixed a pretty gnarly indexing bug I uncovered in pgvectorscale in an impressively short amount of time.”
“I don't have good experience with any third party extensions”
“filters must be expressible as discrete smallints (ruling out continuous variables like timestamps or high cardinality filters like ids)”
“if you think pgvectorscale is interesting to you and you don't want to self host pg”
“the main issue with pgvectorscale is that it's not available in RDS”
“It was what convinced me to just stick to Postgres rather than using a dedicated vector db.”
“I really want to keep using pgvectorscale”
“pgvectorscale is not available in RDS so this wasnt a great solution for us”
“pgvectorscale is 100% open source”
“it looks like a good solution, but it's not available on RDS”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.