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Topic\n\n[![Actions Status](https://github.com/ostcar/topic/workflows/Topic/badge.svg)](https://github.com/ostcar/topic/actions)\n[![PkgGoDev](https://pkg.go.dev/badge/github.com/ostcar/topic)](https://pkg.go.dev/github.com/ostcar/topic)\n\nPackage topic is an in-process pubsub system where new values can be pulled\ninstead of being pushed.\n\nThe idea of pulling updates is inspired by [Kafka](https://kafka.apache.org/) or\n[Redis-Streams](https://redis.io/topics/streams-intro). A subscriber does not\nhave to register or unsubscribe to a topic and can take as long as it needs to\nprocess the messages.\n\n\n## How to use topic\n\nA topic can be created with: `top := topic.New[string]()`.\n\nTo publish one or more values, use: `top.Publish(\"info1\", \"info2\")`.\n\nTo receive values for the first time use: `id, values, err := top.Receive(ctx,\n0)`. The first value is a numeric id, it is needed for the next call of\n`top.Receive()`. The second argument is a list of all values that were\npublished by this topic.\n\nTo receive newer values, use `id, values, err = top.Receive(ctx, id)`. It\nreturns all values that were published after the given `id`.\n\nA topic is safe for concurrent use.\n\n## Run tests\n\nContributions are welcome. Please make sure that the tests are running with:\n\n```go test```\n\n## Who is using topic\n\nTopic was built for [OpenSlides](https://openslides.com) and is used in\nproduction for the\n[Autoupdate-Service](https://github.com/openslides/openslides-autoupdate-service)\nfor many years without any problems.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fostcar%2Ftopic","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fostcar%2Ftopic","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fostcar%2Ftopic/lists"}