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add table of contents to subscriptions architecture doc (#3521)

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Rikin Kachhia
2020-01-07 11:48:25 +05:30
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architecture/live-queries.md
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@@ -6,6 +6,16 @@ Hasura allows 'live queries' for clients (over GraphQL subscriptions). For examp
This document describes Hasura's architecture which lets you scale to handle a million active live queries.
##### Table of Contents
- [TL;DR](#tldr)
- [GraphQL and subscriptions](#graphql-and-subscriptions)
- [Implementing GraphQL live-queries](#implementing-graphql-live-queries)
- [Refetching results for a GraphQL query](#refetching-results-for-a-graphql-query)
- [Hasura approach](#hasura-approach)
- [Testing](#testing)
- [Benefits of this approach](#benefits-of-this-approach)
## TL;DR:
**The setup:** Each client (a web/mobile app) subscribes to data or a live-result with an auth token. The data is in Postgres. 1 million rows are updated in Postgres every second (ensuring a new result pushed per client). Hasura is the GraphQL API provider (with authorization).