Event broker §

serves/stores event stream(s)

Requirements §

• Partitioning
  • event streams can be partitioned into individual substreams
  • → multiple consume instances can consume from multiple streams in parallel
  • 1 per substream
• Strict ordering
• Immutability
• Indexing
  • events get an index
    • consumer lag = current - event index
    • → react by scaling consumers
• Infinite retention
• Replayability

Nice to have §

• support tooling
• hosted service
• client library

📖 Example: §