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  • Message Topics

    Message Topics Subscribe Topics Message Topics KubeEdge uses MQTT for communication between deviceTwin and devices/apps. EventBus can be started in multiple MQTT modes and acts...
  • Sources, Brokers, Triggers, Sinks

    Sources, Brokers, Triggers, Sinks, oh my! CloudEvents Examining the Broker Sources, Brokers, Triggers, Sinks, oh my! For the purposes of this tutorial, let’s keep it simple. Y...
  • UI-Schema

    UI-Schema How UI-Schema works Supported react component types Basic form Business form Combination form How to expand Version: v1.2 UI-Schema KubeVela designs and impleme...
  • Message Topics

    Message Topics Subscribe Topics Message Topics KubeEdge uses MQTT for communication between deviceTwin and devices/apps. EventBus can be started in multiple MQTT modes and acts...
  • Building blocks

    Building blocks Building blocks Modular best practices accessible over standard HTTP or gRPC APIs A building block is an HTTP or gRPC API that can be called from your code and...
  • UPSERT

    UPSERT Statement (Impala 2.8 or higher only) UPSERT Statement (Impala 2.8 or higher only) Acts as a combination of the INSERT and UPDATE statements. For each row processed by...
  • UPSERT

    UPSERT Statement (Impala 2.8 or higher only) UPSERT Statement (Impala 2.8 or higher only) Acts as a combination of the INSERT and UPDATE statements. For each row processed by...
  • Dynamic Hooks

    Dynamic Hooks Class level hooks Document level hook Dynamic Hooks Dynamic Hooks are more flexible than Java Hooks , because they can be changed at run-time and can run per do...
  • Merge

    Merge Table Engine Examples Virtual Columns Merge Table Engine The Merge engine (not to be confused with MergeTree ) does not store data itself, but allows reading from any ...
  • Components of a Blockchain

    714 2021-02-11 《Mastering Ethereum》
    Components of a Blockchain Components of a Blockchain The components of an open, public blockchain are (usually): A peer-to-peer (P2P) network connecting participants and pro...