pgcat
patroni
| pgcat | patroni | |
|---|---|---|
| 3 | 20 | |
| 2,551 | 6,252 | |
| 2.7% | 1.8% | |
| 8.0 | 9.1 | |
| 3 days ago | 2 days ago | |
| Rust | Python | |
| MIT License | MIT License |
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.
pgcat
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MySQL 8.2 Introduces Transparent Read/Write Splitting
Not natively, no. You’d need to front it with something like PgCat [0].
[0]: https://github.com/postgresml/pgcat
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How to Listen to Database Changes Using Postgres Triggers in Elixir
For #1 I've been keeping a keen eye on pgcat [1], in particular the https://github.com/postgresml/pgcat/issues/303 which
- Can someone share experience configuring Highly Available PgSQL?
patroni
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Ask HN: Are there any open source forks of nomad smd consul?
> I think etcd is basically a k8s only project now
I hate etcd with the best of them, but etcd is used in a lot more places than just kubernetes:
https://github.com/apache/apisix/blob/master/docs/en/latest/...
https://github.com/traefik/traefik#:~:text=Etcd,
https://github.com/zalando/patroni#patroni-a-template-for-po...
https://github.com/purpleidea/mgmt/tree/0.0.26/etcd (this one shows up on HN quite a bit)
https://github.com/sorintlab/stolon#features
It's actually one of the major reasons I wouldn't touch those projects
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Citus is not ACID but Eventually Consistent
Citus doesn't provide fault tolerance. Each shard is a monolithic PostgreSQL. To reduce downtime on failures, you can protect each shard with a standby database. As this is a complex configuration, Patroni can help. For this lab I'll use the Citus+Patroni docker-compose-citus.yml from https://github.com/zalando/patroni.git:
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How to create postgres cluster in docker swarm?
We have been using stolon + consul for years without issue in our swarm environments. It may also be possible with patroni.
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Why PostgreSQL High Availability Matters and How to Achieve It
one of the solutions which made it pretty simple for us to run postgresql in a ha environment (mostly in k8s, but works standalone as well) is zalandos patroni: https://github.com/zalando/patroni it's really solid and worked for us for a few years already.
or for k8s their operator: https://github.com/zalando/postgres-operator (docker image: https://github.com/zalando/spilo) we've also tried other operators which were easier to get started, but they failed miserably (crunchyrolls operator is basically based on the zalando one)
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Docker: Patroni + HAProxy + Etcd + PgBouncer
Hello. I am currently using this docker-compose model from Zalando repository. It does not include PgBouncer in its architecture by default. I've been trying to find a containerized implementation involving Patroni, HAProxy, Etcd and PgBouncer. I didn't find anything solid so far.
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Can someone share experience configuring Highly Available PgSQL?
General purpose: Patroni - Set up your own etcd + HAProxy + Patroni + Postgres components and it'll generally manage itself after that.
- Patroni Version 3.0.0 Released
- Any self hostable postgres clustering, replication and fail over system?
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Postgresql HA using repmgr and Keepalived
I don't have a great answer for you except that it sounds like you are trying to create your own version of patroni. Is there a good reason to not just use patroni?
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Testing Patroni strict synchronous mode 👉🏻 you must handle invisible commit and read split brain
git clone https://github.com/zalando/patroni.git cd patroni docker build -t patroni . docker-compose up -d
What are some alternatives?
pgbouncer - lightweight connection pooler for PostgreSQL
pg_auto_failover - Postgres extension and service for automated failover and high-availability
odyssey - Scalable PostgreSQL connection pooler
stolon - PostgreSQL cloud native High Availability and more.
postgresql_cluster - PostgreSQL High-Availability Cluster (based on "Patroni" and DCS "etcd" or "consul"). Automating with Ansible.
Grafana - The open and composable observability and data visualization platform. Visualize metrics, logs, and traces from multiple sources like Prometheus, Loki, Elasticsearch, InfluxDB, Postgres and many more.
supavisor - A cloud-native, multi-tenant Postgres connection pooler.
mssql-changefeed
stolon-chart - Kubernetes Helm chart to deploy HA Postgresql cluster based on Stolon
cloudpilot-emu - A PalmOS emulator for the web
crunchy-proxy - PostgreSQL Connection Proxy by Crunchy Data (beta)