Elasticsearch

10 articles tagged “Elasticsearch”.

Asymmetric query quantization in DiskBBQ

Ben Trent and Thomas Veasey shipped another DiskBBQ optimisation today: quantising queries against coarser parent centroids instead of per-document ones. 5x off the quantisation stack with no meaningful recall loss. The insight underneath is that the query path and the document path don’t have to be treated symmetrically.

Faster similar-document search in Elasticsearch 9.4

Elasticsearch 9.4 adds query_vector_builder.lookup - a tiny API addition that collapses a two-request vector search into one and runs better than 3x faster. A small change with a big impact, and a look at where that ratio actually comes from.

The pattern goes all the way down

DiskBBQ’s new filtered-search optimisation is the same architectural move I wrote about last week, applied one layer deeper. The pattern is fractal - and that’s what makes it useful.

Elasticsearch 1.0 launched: An overview

A run-down of the headline features in Elasticsearch 1.0 — Snapshot/Restore, the cat API, the redesigned percolator, and the new Aggregations framework.

Elasticsearch Snapshot Restore Overview

A walkthrough of the new Snapshot/Restore API arriving in Elasticsearch 1.0 — incremental backups for your cluster via a simple REST endpoint.

Elasticsearch Aggregations Overview

A look at the new Aggregations framework arriving in Elasticsearch 1.0 — multi-level, nested calculations that go far beyond what Facets could do.

London Elasticsearch User Group Presentation

A talk at the London Elasticsearch meetup on how DueDil uses Elasticsearch — bulk indexing, and using Facets to add depth to search.

Using Elasticsearch on Amazon EC2

Setting up an Elasticsearch cluster on EC2: installing the AWS cloud plugin, configuring discovery, and watching nodes find each other.