What is a subscription in Pulsar?

A subscription is a named cursor that tracks a consumer group's read position on a topic, independent from the topic's own data - it's what makes Pulsar behave like a durable queue and a pub-sub system at once, depending on how it's used.

Multiple subscriptions can exist on the same topic simultaneously, each tracking its own independent position, so different consumer groups can read the same stream of messages at their own pace without affecting each other.

The chosen subscription type controls how consumers attached to that subscription divide up the topic's messages.

Invest now in Acorns!!! 🚀
Join Acorns and get your $5 bonus!

Acorns is a micro-investing app that automatically invests your "spare change" from daily purchases into diversified, expert-built portfolios of ETFs. It is designed for beginners, allowing you to start investing with as little as $5. The service automates saving and investing. Disclosure: I may receive a referral bonus.

Invest now!!! Get Free equity stock (US, UK only)!

Use Robinhood app to invest in stocks. It is safe and secure. Use the Referral link to claim your free stock when you sign up!.

The Robinhood app makes it easy to trade stocks, crypto and more.

Webull! Receive free stock by signing up using the link: Webull signup.