# PubSub

PubSub是Google Cloud所推出在雲端上，針對大量資料注入時候，需要的一個Buffer層，透過該服務層可以乘載無限的資料，然後串聯後面的Dataflow服務做資料的進階處理。

在PubSub的Use Case中，以IoT及Mobile的資料Gateway最為著名：

* IoT: 提供大量資料儲存的Queue服務，支援TCP/UDP協定，新版本更可支援gRPC方式，可供大量IoT設備資料匯入雲端。
* Mobile Gateway: PubSub在Publish端提供RESTful API供用戶端實作，讓手持、穿戴裝置可以簡單實作資料注入的方法，解決大資料搜集的第一線問題。

想更近一步了解PubSub:

* Developer Page: <https://cloud.google.com/pubsub/>
* Pricing Page: <https://cloud.google.com/pubsub/pricing>


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