2 posts tagged with "Subscription"

We're excited to unveil the beta release of BifroMQ 3.0.0, a milestone that signifies major progress in the BifroMQ project. This latest version introduces an array of new features aimed at enhancing the messaging experience, with full adoption of the MQTT 5.0 standard. It's important to note that BifroMQ 3.0.0 introduces groundbreaking changes, making it incompatible with data from previous versions. The plugin interface has also been upgraded to support MQTT 5.0 functionalities, which means it cannot support direct rolling upgrades from older versions.

Introduction​

Since BifroMQ became open source, we have frequently received inquiries about its implementation details for Topic subscription matching. In the MQTT Pub/Sub mechanism, Topic subscription matching is undoubtedly one of the core functionalities. In BifroMQ, the management of subscription information and the processing of message Topic matching are handled by a dedicated service module called Dist Service (bifromq-dist). Given that BifroMQ is designed to support the construction of large-scale, multi-tenant Serverless systems, this critical component faces many complex challenges, particularly in the distributed processing of subscription information (TopicFilter) and the associated Topic matching algorithms. This article will delve into the design decision behind the BifroMQ Topic subscription matching scheme and its implementation in Dist Service.