International Business Machines Corporation

Sachin Lingadahalli Vittal

Timo Kussmaul

Michael Man Behrendt

Oliver Koeth

Torsten Steinbach

Christian Habermann

Sven Sterbling

Michael Haide

Gregor Möhler

Alexander Eckert

Manuela Kohler

Aspects of the present invention disclose a method, computer program product, and system for query execution in a multi-tenant cloud service. The method includes one or more processors determining category classes for service queries. The method further includes sending for execution, a selected number of service queries from one of the determined category classes to a shadow query engine. Respective service queries of the categorically classified service queries comprise a different set of configuration parameter values for the shadow query engine. The method further includes recording metadata for the selected number of service queries of the one category class executed on said shadow query engine. The method further includes determining correlations between the recorded metadata. The method further includes determining, from the determined correlations, optimal configuration parameter values comprising optimal configuration parameters for executing the selected number of service queries of the one category classes.

Shadow experiments for serverless multi-tenant cloud services

A method, computer system, and a computer program product for execution of a stateless service on a node in a workload execution environment is provided. The present invention may include defining for each node a workload container including a cache component of a cache-mesh. The present invention may include, upon receiving a state request from a stateless requesting service from one of the cache components of the cache-mesh in an execution container, determining whether a requested state is present in the cache component of a related execution container. The present invention may include, upon a cache miss, broadcasting the state request to other cache components of the cache-mesh, determining, by the other cache components, whether the requested state is present in respective caches, and upon any cache component identifying the requested state, sending the requested state to the requesting service using a protocol for communication.

Multi-level cache-mesh-system for multi-tenant serverless environments

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Mannheim, Germany

Sachin Lingadahalli Vittal