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SQL-Server-First-Responder-Kit
sp_Blitz, sp_BlitzCache, sp_BlitzFirst, sp_BlitzIndex, and other SQL Server scripts for health checks and performance tuning.
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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Check out Ola Hallengren's scripts - https://ola.hallengren.com - these will do all sorts of maintenance for you and are used by many huge (as well as small and medium) companies worldwide for SQL Server maintenance. You can schedule his jobs to run on a schedule. They'll optimise your table indexes, statistics, etc., but do so with some intelligence based on fragmentation, etc.
Check out Ola Hallengren's scripts - https://ola.hallengren.com - and also Brent Ozar's first responder kit - https://github.com/BrentOzarULTD/SQL-Server-First-Responder-Kit