Popularity
6.9
Stable
Activity
0.0
Stable
15
4
4

Monthly Downloads: 22
Programming language: Haskell
License: BSD 3-clause "New" or "Revised" License
Tags: Web     PostgreSQL    

postgresql-simple-queue alternatives and similar packages

Based on the "postgresql" category.
Alternatively, view postgresql-simple-queue alternatives based on common mentions on social networks and blogs.

Do you think we are missing an alternative of postgresql-simple-queue or a related project?

Add another 'postgresql' Package

README

postgresql-simple-queue

This module utilizes PostgreSQL to implement a durable queue for efficently processing arbitrary payloads which can be represented as JSON.

Typically a producer would enqueue a new payload as part of larger database transaction

createAccount userRecord = do
  runDBTSerializable $ do
    createUserDB userRecord
    enqueueDB $ makeVerificationEmail userRecord

In another thread or process, the consumer would drain the queue.

  forever $ do
    -- Attempt get a payload or block until one is available
    payload <- lock conn

    -- Perform application specifc parsing of the payload value
    case fromJSON $ pValue payload of
      Success x -> sendEmail x -- Perform application specific processing
      Error err -> logErr err

    -- Remove the payload from future processing
    dequeue conn $ pId payload

Installation

stack install postgresql-simple-queue

Blog

This package was discussed in the blog Testing PostgreSQL for Fun