mongoDB
MongoDB driver for Haskell (by mongodb-haskell)
pool-conduit
Persistence interface for Haskell allowing multiple storage methods. (by yesodweb)
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mongoDB | pool-conduit | |
---|---|---|
1 | 9 | |
167 | 452 | |
1.2% | 0.0% | |
6.0 | 7.5 | |
about 1 month ago | about 2 months ago | |
Haskell | Haskell | |
Apache License 2.0 | MIT License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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.
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.
mongoDB
Posts with mentions or reviews of mongoDB.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-09-21.
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Bug Hunting with the MongoDB Haskell Community
It was brought to my attention that one of these community drivers - the Haskell driver - was experiencing an issue whereby queries were no longer returning results from the MongoDB Atlas clusters their applications were connected to.
pool-conduit
Posts with mentions or reviews of pool-conduit.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2022-05-06.
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Was simplified subsumption worth it for industry Haskell programmers?
I don't think there's any malicious intent. It seems pretty clear that the motivation here is to simplify the type checker considerably, which is a really good reason to do something. Heck, I've got an open issue for deleting a feature in persistent which (according to the lack of comments on the issue) only ever used by persistent's own test suite.
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[ANNOUNCE] GHC 9.2.2 is now available!
PR submitted: https://github.com/yesodweb/persistent/pull/1366 :)
- Simple Servant + Persistent + Katip template for starting a new project
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Async Control Flow
Ha, I spotted a possible resource leak here. If stmtFinalize fail, then the connection won't be closed.
Hmm, you are right, the bracket I pointed to is unrelated. I guess the fix is in catchAny, which doesn't catch ThreadKilled. So not it's not rolling the transaction back in case of asynchronous exceptions. My point is that it probably should not rollback even on synchronous exception. BTW the issue is well know, see for example here
https://github.com/yesodweb/persistent/blob/f69716dcfeca01896ec42dec874393fbe60d3939/persistent/Database/Persist/Sql/Run.hs#L212
I don't think connection is returned to the pool here. The thread is interrupted when query is sent to server, but before the results are consumed. At that point cleanup action catches `ThreadKilled` exceptions and issues `ROLLBACK`, which fails with `libpg` exception because the previous operations was not completed. And now cleanup action rethrows the `libpg` exception instead of the `ThreadKilled` one - that's the behavior of `bracket` from `base`. [The fix](https://github.com/yesodweb/persistent/pull/1207/files#diff-f9d7f232cd00cb88188b7fcc68110e3f4cb378fcad9df652360de44d13cd86e3R199) was to use `bracket` from `unliftio`, which [rethrows the correct exception](https://hackage.haskell.org/package/unliftio-0.2.14/docs/src/UnliftIO.Exception.html#bracket).
What are some alternatives?
When comparing mongoDB and pool-conduit you can also consider the following projects:
hocilib - A lightweight Haskell binding to the OCILIB C API
eventstore - EventStore Haskell TCP Client
influxdb - InfluxDB client library for Haskell
persistent-odbc - uses persistent connecting via hdbc odbc
HongoDB - A Simple Key Value Store
postgresql-simple-migration - PostgreSQL Schema Migrations for Haskell
hw-kafka-client - Kafka client for Haskell, including auto-rebalancing consumers
HDBC - Haskell Database Connectivity
persistent-relational-record - Persistent adapter for Haskell Relational Record
presto-hdbc - Presto HDBC Connector
memcache - Haskell Memcached Client
lmdb - Lightning MDB bindings for Haskell