See DZone review.
Ranked in these QuestionsQuestion Ranking
Pro Easy visualization and monitoring
Can be easily visualized with Chronograf or Graphana.
Pro Open source
InfluxDB is licensed under the MIT license with source code available on GitHub.
Pro Many official drivers
Drivers written in C#, Go, Java, PHP, Python, Rails, and Ruby are available with many more community written drivers.
Pro Powerful data query & manipulation language: FLUX
FLUX is InfluxDB's new query & manipulation language. It's not at all like SQL (unlike the previous query language) - but is more powerful, testable & development friendly
Pro Pluggable storage model
Con Loses data when overloaded
Con Poor performance for deletion with predicates
Con Clustering not available with the free version
Unfortunately, clustering is not available with the free version (source).
Con Uses a lot of RAM
Con No same-time insert
No duplicate times.