lasher
MapDB
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| lasher | MapDB | |
|---|---|---|
| 1 | 3 | |
| 4 | 4,664 | |
| - | - | |
| 0.0 | 0.0 | |
| 7 months ago | 13 days ago | |
| Java | Java | |
| Apache License 2.0 | Apache License 2.0 |
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lasher
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Solution for hash-map with >100M values
Do you need to update the data after initial load? If not, then I would suggest using my Paldb fork , otherwise you could try my lasher library. It's in early stage but first results are very promising, I was testing it with 10-100M elements and the performance was similar to java hashmap.
MapDB
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what is the best persistent collection library?
Anyway, without further ado, I found MapDB (https://github.com/jankotek/mapdb) which does exactly that. Of course, they also provide their own Java collection implementations as well, so I suspect using it with Vavr would be a poor idea, but it is very cool in its own right anyway. Of course, there is also Apache Derby and HSQLDB, and those great options with a long history as well. I haven't played with these in a while though, so I might give them a try again soon for some personal stuff.
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Ask HN: What are the best key-value self-hosted storage engines?
In Java I like
It is more feature rich than you want but in Python I'd probably just use sqlite3 since it is in the standard library.
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Solution for hash-map with >100M values
I have had good results with mapdb
What are some alternatives?
Chronicle Map - Replicate your Key Value Store across your network, with consistency, persistance and performance.
H2 - H2 is an embeddable RDBMS written in Java.
JetBrains Xodus - Transactional schema-less embedded database used by JetBrains YouTrack and JetBrains Hub.
Redisson - Redisson - 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 ...
Jedis - Redis Java client designed for performance and ease of use.
Exposed - Kotlin SQL Framework
SQLDelight - SQLDelight - Generates typesafe Kotlin APIs from SQL
DBFlow - A blazing fast, powerful, and very simple ORM android database library that writes database code for you.
kotlin-jpa-specification-dsl - This library provides a fluent DSL for querying spring data JPA repositories using spring data Specifications (i.e. the JPA Criteria API), without boilerplate code or a generated metamodel.
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.
kmongo - KMongo - a Kotlin toolkit for Mongo
ObjectBox Java (Kotlin, Android) - Java Database for Mobile & IoT - fast and lightweight