Top 3 Java n-plus-1 Projects

quickperf

0 445 3.3 Java

QuickPerf is a testing library for Java to quickly evaluate and improve some performance-related properties
jplusone

1 106 5.5 Java

Tool for automatic detection and asserting "N+1 SELECT problem" occurences in JPA based Spring Boot Java applications and finding origin of JPA issued SQL statements in general
InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
safeql

4 15 0.0 Java

Composable / async / functional / type-safe / parallel-pipelined queries and relations without SQL injection or N+1s. (by karmakaze)

Project mention: Sketch of a Post-ORM | news.ycombinator.com | 2023-06-02

I want sum types.
I want a statically-typed way of constructing composable queries that follow SQL rather than reinvent a different thing. It doesn't have to be the same syntax but it has to be the same structuring.
I started writing one[0] and stopped before doing all the boilerplate code generation, having moved on from the JVM ecosystem for the time being. One thing it does is treat most things like sets so we don't end up with N+1 queries. Another trick it uses is collapsing constant expressions via an expression evaluation library[1].
[0] https://github.com/karmakaze/safeql
[1] https://github.com/karmakaze/moja

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).