\u8ba2\u9605\u4e00\u4efd\u62a5\u7eb8\uff0c\u5230\u65f6\u5019\u5c31\u4f1a\u6295\u9012\u7ed9\u4f60\u3002
\n\u8ba2\u9605\u4e00\u4e2a\u65b0\u95fb\u9891\u9053\uff0c\u4e00\u6709\u65b0\u95fb\u5c31\u4f1a\u63a8\u9001\u7ed9\u4f60\u3002<\/p>\n
\u672c\u8d28\u4e0a\uff0c\u5b83\u662f\u4e00\u79cd\u5f02\u6b65\u901a\u4fe1\u7684\u67b6\u6784\u6a21\u5f0f
\n\u4e0e\u4e4b\u5bf9\u5e94\u7684\u4ee3\u7801\u6a21\u5f0f\u5c31\u662f\u89c2\u5bdf\u8005\u6a21\u5f0f\uff0c\u5176\u6ce8\u518c register \u5bf9\u5e94\u4e8e subscribe, notify \u5bf9\u5e94\u4e8e publishe<\/p>\n
subscriber -> router: subscribe\nrouter-->subscriber: ack<\/code><\/pre>\n<\/li>\n- publisher\n
publisher -> router: event\nrouter-->publisher: ack\nrouter --> subscriber: event\nsubscviber-->router: ack<\/code><\/pre>\n<\/li>\n<\/ul>\n\u5178\u578b\u7528\u4f8b\u6709<\/p>\n
\n- \n
Ingestion user interaction and server events.
\nTo use user interaction events from end-user apps or server events from your system, you might forward them to Pub\/Sub. You can then use a stream processing tool, such as Dataflow, which delivers the events to databases. Examples of such databases are BigQuery, Cloud Bigtable, and Cloud Storage. Pub\/Sub lets you gather events from many clients simultaneously.<\/p>\n<\/li>\n
- \n
Real-time event distribution.
\nEvents, raw or processed, may be made available to multiple applications across your team and organization for real- time processing. Pub\/Sub supports an "enterprise event bus" and event-driven application design patterns.<\/p>\n<\/li>\n
- \n
Replicating data among databases. <\/p>\n<\/li>\n<\/ul>\n
Pub\/Sub is commonly used to distribute change events from databases. These events can be used to construct a view of the database state and state history in BigQuery and other data storage systems.<\/p>\n
\n- Parallel processing and workflows. <\/li>\n<\/ul>\n
You can efficiently distribute many tasks among multiple workers by using Pub\/Sub messages to connect to Cloud Functions. Examples of such tasks are compressing text files, sending email notifications, evaluating AI models, and reformatting images.<\/p>\n
\n- Enterprise event bus. <\/li>\n<\/ul>\n
You can create an enterprise-wide real-time data sharing bus, distributing business events, database updates, and analytics events across your organization.<\/p>\n
\n- Data streaming from applications, services, or IoT devices. <\/li>\n<\/ul>\n
For example, a SaaS application can publish a real-time feed of events. Or, a residential sensor can stream data to Pub\/Sub for use in other Google Cloud products through a Dataflow pipeline.<\/p>\n
\n- \n
Refreshing distributed caches.
\nFor example, an application can publish invalidation events to update the IDs of objects that have changed.<\/p>\n<\/li>\n
- \n
Load balancing for reliability. <\/p>\n<\/li>\n<\/ul>\n
For example, instances of a service may be deployed on Compute Engine in multiple zones but subscribe to a common topic. When the service fails in any zone, the others can pick up the load automatically.<\/p>\n
Reference<\/h1>\n\n- https:\/\/en.wikipedia.org\/wiki\/Publish%E2%80%93subscribe_pattern<\/a><\/li>\n
- https:\/\/cloud.google.com\/pubsub\/docs\/overview<\/a><\/li>\n
- https:\/\/learn.microsoft.com\/en-us\/azure\/architecture\/patterns\/publisher-subscriber<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"
\u8ba2\u9605\u4e00\u4efd\u62a5\u7eb8\uff0c\u5230\u65f6\u5019\u5c31\u4f1a\u6295\u9012\u7ed9\u4f60\u3002 \u8ba2\u9605\u4e00\u4e2a\u65b0\u95fb\u9891\u9053\uff0c\u4e00\u6709\u65b0\u95fb\u5c31\u4f1a\u63a8\u9001\u7ed9\u4f60\u3002 \u672c\u8d28\u4e0a\uff0c\u5b83\u662f\u4e00\u79cd\u5f02\u6b65\u901a\u4fe1\u7684\u67b6\u6784\u6a21\u5f0f \u4e0e\u4e4b\u5bf9\u5e94\u7684\u4ee3\u7801\u6a21\u5f0f\u5c31\u662f\u89c2\u5bdf\u8005\u6a21\u5f0f\uff0c\u5176\u6ce8\u518c register \u5bf9\u5e94\u4e8e subscribe, notify \u5bf9\u5e94\u4e8e publishe subscribe subscriber -> router: subscribe router–>subscriber: ack publisher publisher -> router: event router–>publisher: ack router –> subscriber: event subscviber–>router: ack \u5178\u578b\u7528\u4f8b\u6709 Ingestion user interaction and server events. To use user interaction events from end-user apps or server events from your system, you might forward them […] →Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-830","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/830"}],"collection":[{"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=830"}],"version-history":[{"count":2,"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/830\/revisions"}],"predecessor-version":[{"id":832,"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/830\/revisions\/832"}],"wp:attachment":[{"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=830"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=830"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fanyamin.com\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=830"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}