Top all-time · #2942
OkCupid Tech Blog
Company blog · tech.okcupid.comprogrammingweb
OkCupid Tech Blog is the company blog at tech.okcupid.com, writing about programming and web. Since 2015, 26 different Hacker News readers have linked it 46 times, most often “OkCupid Presents: Vespa vs. Elasticsearch for matching millions of people”. It is still writing: the last post was on 2025-04-23, and you can follow it by feed.
Too few sampled comments (4) to say how often HN recommends it.?
Why HN links it
HN commenters cite OkCupid's engineering blog as a reference for image hashing and perceptual matching, and for a Vespa vs Elasticsearch comparison. The comments link the posts without judging the writing.
Summarised by Claude from a sample of 4 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- OkCupid Presents: Vespa vs. Elasticsearch for matching millions of people5 people · 5 mentions · first linked 2020-09-29
- Swiping Right on Bloom Filters4 people · 4 mentions · first linked 2015-12-01
- Evaluating Perceptual Image Hashes at OkCupid3 people · 3 mentions · first linked 2017-05-31
- The pitfalls of A/B testing in social networks3 people · 3 mentions · first linked 2017-04-18
- Moving OkCupid from REST to GraphQL3 people · 3 mentions · first linked 2020-11-13
- When Debuggers Lie by OkCupid2 people · 2 mentions · first linked 2017-07-14
What Hacker News says?
we also have a tech blog that we are revitalizing! http://tech.okcupid.com
Comment linking /
on “Ask HN: Which companies have the best blogs written by their engineering team?”Submitted Why we decided against GraphQL for local state management as a story · 124 points
HN discussionI think for handling truly/non-affine arbitrary transformations we will have to resort to ML. Then we could have matching very similar to how humans do it (where we really don't care if the transformation is affine/non-affine we just care if it's a huge transformation the makes the image unrecognisable). But I really don't know much about ML. Okcupid talked about this in an article about image hashing [0] and they h…
Comment linking /evaluating-perceptual-image-hashes-okcupid/
on “Show HN: Transformation Invariant Reverse Image Search”Submitted The pitfalls of A/B testing in social networks as a story · 124 points
HN discussionWe've had good success with Vespa [1] for this usecase, both using it to rank by vector similarity and apply business logic oriented filters. Search latencies are fairly low, even with constantly updating documents. [1] https://tech.okcupid.com/vespa-vs-elasticsearch-for-matching...
Comment linking /vespa-vs-elasticsearch-for-matching-millions-of-people-6e3af18eb4dc
on “A gentle introduction to vector databases”Submitted Evaluating Perceptual Image Hashes at OkCupid as a story · 97 points
HN discussionHas anyone ever had success on an app like Hinge, then deleted it only to see a large drop in your success rate when nothing else changed about your profile? If so, it could be due to things like this: https://tech.okcupid.com/evaluating-perceptual-image-hashes-... Match Group owns OkCupid, Hinge, Tinder and so on.. so wouldn’t be surprising if they all used the same or similar algorithms for spam prevention and noo…
Comment linking /evaluating-perceptual-image-hashes-at-okcupid-e98a3e74aa3a
on “‘Why am I talking to 10 guys?’ The rise and fall of dating apps”Submitted Rust and RPC at OkCupid as a story · 63 points
HN discussionSubmitted A failed dating experiment – Responsiveness Sort as a story · 39 points
HN discussionSubmitted Moving OkCupid from REST to GraphQL as a story · 36 points
HN discussionSubmitted How OkCupid predicts who you will like as a story · 34 points
HN discussionSubmitted OkCupid Presents: Vespa vs. Elasticsearch for matching millions of people as a story · 11 points
HN discussionSubmitted How OkCupid organizes its multi-page React app as a story · 11 points
HN discussionSubmitted Evaluating Perceptual Image Hashes at OkCupid as a story · 8 points
HN discussionSubmitted When Debuggers Lie by OkCupid as a story · 7 points
HN discussionSubmitted Swiping Right on Bloom Filters as a story · 7 points
HN discussionSubmitted Building an Android Thin-Client at OkCupid as a story · 6 points
HN discussionSubmitted The pitfalls of a/b testing in social networks as a story · 6 points
HN discussionSubmitted Moving OkCupid from REST to GraphQL as a story · 4 points
HN discussionSubmitted Moving OkCupid from REST to GraphQL as a story · 4 points
HN discussionSubmitted Vespa vs. Elasticsearch for matching millions of people as a story · 4 points
HN discussionSubmitted Swiping Right on Bloom Filters as a story · 4 points
HN discussionSubmitted The Shadow Request: Troubleshooting OkCupid’s First GraphQL Release as a story · 3 points
HN discussionSubmitted An Intro Guide to Protocol vs. Object Oriented Programming as a story · 3 points
HN discussionSubmitted Monitoring performance the easy way: HAProxy to the rescue as a story · 3 points
HN discussionSubmitted Getting Hooked on React Hooks as a story · 3 points
HN discussionSubmitted When Debuggers Lie as a story · 3 points
HN discussionSubmitted iOS Scroll Performance Tutorial from OkCupid as a story · 3 points
HN discussionSubmitted Large-scale collaborative filtering to predict who will like you, with JAX as a story · 2 points
HN discussionSubmitted Vespa vs. Elasticsearch for matching millions of people as a story · 2 points
HN discussion
