Abstract: A system executes a set of database operations and determines counts of instances that each key is specified for a corresponding column by any database operations on a database table. The system identifies each key which is associated with any determined count that satisfies a threshold as a corresponding frequently accessed key. The system creates an optimized index for each column which stores any frequently accessed key. The system inserts each frequently accessed key into a corresponding optimized index. The system receives a database operation that specifies a specific key for a specific column in the database table. If any optimized index matches the specific column and stores any frequently accessed key that matches the specific key, then the system references a matching frequently accessed key in a matching optimized index to access a record, which is associated with the specific column and the specific key, via the database table.

Abstract: Exemplary systems, methods, and apparatuses migrate tenants between instances in a cloud based computing environment. The exemplary system assigns a dedicated share on multi-tenant cloud computing services instances. The exemplary system further receives performance characteristics for each of the tenants, analyzes the performance characteristics, detects an anomaly in one of the plurality of tenants responsive to analyzing the performance characteristics, and evicts one of the tenants in which the anomaly was detected from the one or more instances. The exemplary system further re-assigns the evicted tenant to a dedicated share on one or more multi-tenant cloud computing services instances other than the instance to which it was assigned before eviction.

Abstract: A system executes a set of database operations and determines counts of instances that each key is specified for a corresponding column by any database operations on a database table. The system identifies each key which is associated with any determined count that satisfies a threshold as a corresponding frequently accessed key. The system creates an optimized index for each column which stores any frequently accessed key. The system inserts each frequently accessed key into a corresponding optimized index. The system receives a database operation that specifies a specific key for a specific column in the database table. If any optimized index matches the specific column and stores any frequently accessed key that matches the specific key, then the system references a matching frequently accessed key in a matching optimized index to access a record, which is associated with the specific column and the specific key, via the database table.

Abstract: Systems, methods, and apparatuses for migrating tenants between instances in a cloud based computing environment.