|24 days ago||3 months ago|
|Apache License 2.0||Apache License 2.0|
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.
This is how I built a Twitter bot that posts random cat posts from Reddit.
7 projects | dev.to | 28 Oct 2022
KMongo - for chit-chatting with MongoDB.
I want to create an app but I'm new to kotlin.
2 projects | /r/Kotlin | 9 Dec 2021
GC, hands off my data!
6 projects | dev.to | 27 Oct 2023
I decided to start with an overview of what open-source options are currently available. When it comes to the implementation of the on-heap cache mechanism, the options are numerous – there is well known: guava, ehcache, caffeine and many other solutions. However, when I began researching cache mechanisms offering the possibility of storing data outside GC control, I found out that there are very few solutions left. Out of the popular ones, only Terracotta is supported. It seems that this is a very niche solution and we do not have many options to choose from. In terms of less-known projects, I came across Chronicle-Map, MapDB and OHC. I chose the last one because it was created as part of the Cassandra project, which I had some experience with and was curious about how this component worked:
Permazen: Language-natural persistence to KV stores
6 projects | news.ycombinator.com | 19 Sep 2023
So, it's an object database, like Zope's ZODB on Python?
I like the idea, but I'd like to learn about use cases for it.
Otherwise, in Java, MapDB is about as far as I'd be willing to go: https://github.com/jankotek/mapdb/
what is the best persistent collection library?
5 projects | /r/java | 2 Sep 2022
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.
Ask HN: What are the best key-value self-hosted storage engines?
5 projects | news.ycombinator.com | 31 Mar 2022
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.
Solution for hash-map with >100M values
7 projects | /r/java | 21 Dec 2020
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 - Easy Redis Java client with features of In-Memory Data Grid. Sync/Async/RxJava/Reactive API. Over 50 Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Spring Cache, Tomcat, Scheduler, JCache API, Hibernate, RPC, local cache ...
Jedis - Redis Java client
Exposed - Kotlin SQL Framework
SQLDelight - SQLDelight - Generates typesafe Kotlin APIs from SQL
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.
DBFlow - A blazing fast, powerful, and very simple ORM android database library that writes database code for you.
Ktorm - A lightweight ORM framework for Kotlin with strong-typed SQL DSL and sequence APIs.
kotliquery - A handy Database access library in Kotlin