US 11,886,437 B2
Reduced latency query processing
Daniel Martin, Leinfelden-Echterdingen (DE); Sowmya Kameswaran, San Jose, CA (US); Vassil Radkov Dimov, Stuttgart (DE); Christian Michel, Sindelfingen (DE); and Manogari Nogi Simanjuntak, San Jose, CA (US)
Assigned to International Business Machines Corporation, Armonk, NY (US)
Filed by INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed on Dec. 8, 2021, as Appl. No. 17/643,235.
Prior Publication US 2023/0177054 A1, Jun. 8, 2023
Int. Cl. G06F 16/00 (2019.01); G06F 16/2455 (2019.01); G06F 16/27 (2019.01); G06F 16/2458 (2019.01)
CPC G06F 16/24561 (2019.01) [G06F 16/2471 (2019.01); G06F 16/27 (2019.01)] 20 Claims
OG exemplary drawing
 
1. A computer implemented method comprising:
receiving by primary database system a query statement that references a first table, wherein the primary database system is associated to a first accelerator database system and a second accelerator database system;
examining latency data that specifies a latency with which a modification to the first table has been replicated into the first accelerator database system and a latency with which a modification to the first table has been replicated into the second accelerator database system, wherein the examining includes examining historical latency data that specifies latencies of a history of replications of modifications of the first table;
selecting, in dependence on the examining, the first accelerator database system for execution of the query statement; and
routing the query statement to the first accelerator database system for execution in response to the selecting.