公开(公告)号：US11962663B1

公开(公告)日：2024-04-16

申请号：US17697777

申请日：2022-03-17

Applicant: Amazon Technologies, Inc.

Inventor： Richard Threlkeld ,  Yash H Patel ,  Michael Paris

IPC: G06F15/16 ,  G06F9/54 ,  G06F16/242 ,  G06F16/2455 ,  H04L67/133 ,  H04L67/55

CPC classification number: H04L67/55 ,  G06F9/542 ,  G06F16/2448 ,  G06F16/24568 ,  H04L67/133

Abstract: Server-specified subscription filters for long-lived client requests to fetch data in response to events. In one aspect, the techniques encompass a method performed by a set of one or more computing devices. The method includes the step of receiving a long-lived request to fetch data in response to events sent by a client computing device. The method further includes receiving a server-specified subscription filter for the long-lived request and executing the long-lived request. Executing the long-lived request includes creating a persistent function that uses the server-specified subscription filter to map a source event stream to a response event stream. The response event stream is provided to the client computing device. The server-specified subscription filter facilitates filtering of events fetched for the long-lived request in a way that may not be possible or impractical if the subscription client were required to specify the filter in the long-lived request.