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Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Off-heap memory in Java
2 projects | dev.to | 8 Apr 2021
Chronicle-Map: Chronicle Map is an in-memory, key-value store, designed for low-latency, and/or multi-process applications.
Solution for hash-map with >100M values
7 projects | reddit.com/r/java | 21 Dec 2020
https://github.com/OpenHFT/Chronicle-Map - Maybe a better offheap map7 projects | reddit.com/r/java | 21 Dec 2020
I've wrangled data sets in the ~600gb range using nothing but plain old Java and a few beefy boxes. This can all be kept in memory, but you have to go off-heap. You can use Chronicle Map and Chronicle Values to model this data and work with it off-heap in a way that's still very clean and object oriented. 128gb of RAM is cheap these days, whether you're in the cloud or not.
We haven't tracked posts mentioning jetcd yet.
Tracking mentions began in Dec 2020.
What are some alternatives?
MapDB - MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.
Redisson - Redisson - Easy Redis Java client with features of In-Memory Data Grid. Over 50 Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Publish / Subscribe, Bloom filter, Spring Cache, Tomcat, Scheduler, JCache API, Hibernate, MyBatis, RPC, local cache ...
JetBrains Xodus - Transactional schema-less embedded database used by JetBrains YouTrack and JetBrains Hub.
H2 - H2 is an embeddable RDBMS written in Java.
Jedis - Redis Java client
HikariCP - 光 HikariCP・A solid, high-performance, JDBC connection pool at last.
Realm - Realm is a mobile database: a replacement for SQLite & ORMs
Speedment - Speedment is a Stream ORM Java Toolkit and Runtime
Apache Phoenix - Mirror of Apache Phoenix
jOOQ - jOOQ is the best way to write SQL in Java
Crate - CrateDB is a distributed SQL database that makes it simple to store and analyze massive amounts of data in real-time. Built on top of Lucene.