HikariCP

光 HikariCP・A solid, high-performance, JDBC connection pool at last. (by brettwooldridge)

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HikariCP reviews and mentions

Posts with mentions or reviews of HikariCP. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2025-01-29.
  • A Major Postgres Upgrade with Zero Downtime
    4 projects | news.ycombinator.com | 29 Jan 2025
    > are they using a connection pooler

    We use Hikari [1] an in-process connection pooler. We didn't opt for pgbouncer at al, because we didn't want to add the extra infra yet.

    > since what they did in code can be natively done with PgBouncer, PgCat, et al.

    Can you point me to a reference I could look at, about doing a major version upgrade with PgBouncer et al? My understanding that we would still need to write a script to switch masters, similar to what we wrote.

    > all the active connections

    The active connections we were referring too were websocket connections, we haven't had problems with PG connections.

    Right now the algorithm we use to find affected queries and notify websockets starts to falter when the number of active websocket connections get too high. We're working on improving it in the coming weeks. I'll update the essay to clarify.

    > I did feel for them here:

    Thank you! That part was definitely the most frustrating.

    [1] https://github.com/brettwooldridge/HikariCP

  • Kapper, a Fresh Look at ORMs for Kotlin and the JVM
    4 projects | dev.to | 22 Jan 2025
    // Create a DataSource object, for example using [HikariCP](https://github.com/brettwooldridge/HikariCP) // Kapper is un-opinionated about which pooler, if any you use. val dataSource = HikariDataSource().apply { jdbcUrl = "jdbc:PostgreSQL://localhost:5432/mydatabase" username = "username" password = "password" } // The Kapper API is exposed as an extension of the java.sql.Connection interface: dataSource.connection.use { connection -> // Do database stuff }
  • O que é o hikari pool?
    2 projects | dev.to | 6 Jan 2025
    No contexto específico estava sendo falado sobre o Hikari Connection Pool. Mas, se o Hikari é um Connection Pool, o que seria um "Pool"?
  • Melhorando o desempenho de aplicações Spring Boot - Parte II
    2 projects | dev.to | 27 Aug 2024
  • Java virtual threads caused a deadlock in TPC-C for PostgreSQL
    4 projects | news.ycombinator.com | 15 Jan 2024
    Looks like HikariCP is also awaiting fixes for this https://github.com/brettwooldridge/HikariCP/pull/2055
  • About Pool Sizing
    1 project | news.ycombinator.com | 5 Sep 2023
  • HikariCP maximumPoolSize based on AWS ECS number of tasks
    1 project | /r/SpringBoot | 21 Apr 2023
  • Writing to db
    5 projects | /r/Kotlin | 20 Feb 2023
    I have used hikari and exposed to do this in the past with postgres, although other dialects are supported.
  • A Tale of Two Connection Pools
    2 projects | dev.to | 13 Feb 2023
    I found one suggestion from the author of HikariCP on how to address this, which I implemented and it worked. However, there are additional classes involved, and it feels a little clunky and hard to follow.
  • Spring boot change password runtime
    1 project | /r/javahelp | 31 Dec 2022
    Not really, you can change some things in spring boot but doing so will typically trigger a refresh which is less reliable than restarting but still causes a large performance hit. You could probably do it with hikari if you really needed to but it's inadvisable to build your application around this mechanic.
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Stats

Basic HikariCP repo stats
37
20,484
8.8
16 days ago

brettwooldridge/HikariCP is an open source project licensed under Apache License 2.0 which is an OSI approved license.

The primary programming language of HikariCP is Java.


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