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License: https://github.com/questdb/questdb/blob/master/LICENSE.txt

QuestDB is an open source SQL database for time-series data. QuestDB is a high performance database for time-series data. QuestDB's software architecture has been designed as close to the hardware structure as possible, hence, offering breakthrough performance. Through QuestDB, companies can harness the power of time series data by handling billions of time-stamped events without worrying about powerful hardware.

QuestDB uses a column-oriented approach and supports heavy parallelized vectorized execution using SIMD instructions. QuestDB implements SQL and augments it for time-series with native extensions. It exposes a Postgres wire protocol, and supports ingestion with InfluxDB Line Protocol. QuestDB uses a single writer model. The writer re-orders timestamps on the fly. Multi-publisher, single consumer queue provides concurrent write access making QuestDB to achieve concurrency control.

• Organization working on large databases
• Users working on timeseries data
• Companies working on ML models
• And anyone who deals with high performance real time data

Ubuntu 20.04 LTS preconfigured with QuestDB that offers plug-and-play functionality, so you don't have to worry about setting up the environment.
The QuestDB is an open-source project. Anyone can download, use, work on, and share it with others. QuestDB's key features are:

• Relational model for time series
• SIMD accelerated queries
• Time partitioned
• Heavy parallelization
• Scalable ingestion
• Immediate consistency
• Time series and relational joins
• Native InfluxDB line protocol
• Grafana through Postgres wire support
• Schema or schema-free
• Aggregations and down sampling

• Minimum memory: 8 GB
• Minimum vCPU: 2 vCPUs
• Operating System: Ubuntu 20.04

Create a VM with this image and you're good to go!

The default port QuestDB listens to is 9000. You can access QuestDB's web interface at http://yourip:9000