Serverless Stream Processing With Apache Flink®

What this post added

This post details the serverless architecture of Confluent Cloud for Apache Flink, focusing on fine-grained scaling and fast rescaling. It explains the use of compute pools for elastic resource allocation, the DS2 algorithm for determining optimal parallelism and task sizes, and Flink's Adaptive Scheduler and Declarative Resource Management for non-disruptive rescaling operations. It also highlights specific Apache Flink JIRA issues (FLINK-32326, FLINK-32345, FLINK-33341, FLINK-31238) that contribute to faster rescaling, particularly for jobs with small state. The post also elaborates on the cost-effectiveness of the usage-based billing model and its benefits for variable workloads.