Abstract: A computing network provides a database service and implements a caching mechanism for processing database queries. The database services are provided using a primary replica of data and computing resources, and a secondary replica of the data and computing resources. The primary and secondary replicas are synchronized so that the secondary replica can provide the database services in place of the primary replica in response to a failover from the primary replica to the secondary replica. In response to initiating, by the database service, a failover from the primary replica to the secondary replica, the cached plans compiled by the secondary replica are used to process matching query batches by the secondary replica. The secondary replica processes the matching query batches without accessing plans compiled by the primary replica.

Abstract: When two ad hoc query batches with the same query text are to be compiled, one locking key is created for both ad hoc query batches. The locking key is allocated to the first ad hoc query batch. In a subsequent cache lookup stage, if no cache is found for the first ad hoc query batch, a plan is compiled for the first ad hoc query batch, and inserted into a cache. The locking key is released and allocated to the second ad hoc query batch. If the locking key for the second ad hoc query batch is the same as for the first ad hoc query batch, the compiled plan is identified in the cache. Plan compilation is bypassed for the second ad hoc query batch.

Abstract: Provided is a method for managing a network slice instance (NSI) in a communications network. A first performance of the NSI is monitored by a first network slice subnet instance (NSSI) associated with the NSI. A first node obtains, from a second node, a request to monitor a second performance of the NSI. The second performance is of one or more microservices to provide data on a sector of the network. The first node determines, based on one or more requirements of the request, to perform one of: i) initiating (303) a creation of a second NSSI adapted to monitor the second performance based on the requirements, and ii) modifying, based on the requirements, an existing second NSSI, to monitor the second performance. The created or modified second NSSI being: a) independent from, and b) sharable with, the first subnet slice instance.

Abstract: Provided is a method for managing a network slice instance (NSI) in a communications network. A first performance of the NSI is monitored by a first network slice subnet instance (NSSI) associated with the NSI. A first node obtains, from a second node, a request to monitor a second performance of the NSI. The second performance is of one or more microservices to provide data on a sector of the network. The first node determines, based on one or more requirements of the request, to perform one of: i) initiating (303) a creation of a second NSSI adapted to monitor the second performance based on the requirements, and ii) modifying, based on the requirements, an existing second NSSI, to monitor the second performance. The created or modified second NSSI being: a) independent from, and b) sharable with, the first subnet slice instance.