Automated Database Indexing using Model-free Reinforcement Learning
This addresses the challenge for database administrators of manually configuring indexes, which can waste resources and degrade performance, though it appears incremental as it builds on existing reinforcement learning methods.
The paper tackled the problem of automated database indexing to optimize query performance without requiring extensive domain knowledge, achieving superior performance compared to reinforcement learning and genetic algorithms with near-optimal configurations and efficient scaling to large databases.
Configuring databases for efficient querying is a complex task, often carried out by a database administrator. Solving the problem of building indexes that truly optimize database access requires a substantial amount of database and domain knowledge, the lack of which often results in wasted space and memory for irrelevant indexes, possibly jeopardizing database performance for querying and certainly degrading performance for updating. We develop an architecture to solve the problem of automatically indexing a database by using reinforcement learning to optimize queries by indexing data throughout the lifetime of a database. In our experimental evaluation, our architecture shows superior performance compared to related work on reinforcement learning and genetic algorithms, maintaining near-optimal index configurations and efficiently scaling to large databases.