QuasarDB is a Gartner Cool Vendor

QuasarDB is one of the 3 innovative companies to be included in Gartner's Cool Vendors 2020 in Data Management just published on October 16th.

Cool Vendors is one of Gartner’s hottest  programs and most read research profiling smaller vendors, and it provides clients exposure to new and innovative technologies and services.   

The criteria by which a vendor is defined as “cool” are:

  • Innovative – the vendor has developed technologies/products that enable users to do things they couldn’t do before
  • Impactful – the vendor offers technologies/products that have or will have business impact; it’s not just “technology for the sake of technology”
  • Intriguing – the vendor has caught Gartner’s interest/curiosity during the past 12 months

If you're a Gartner customer, you can get the document here.

©GARTNER is a registered trademark and service mark of Gartner, Inc. and/or its affiliates, and is used herein with permission. All rights reserved.

by Edouard Alligand

QuasarDB Beta 3.9.4 released

We are very pleased to announce the immediate availability of QuasarDB 3.9.4.


This release introduces the experimental PIVOT feature, and introduces important bug fixes and performance improvements.


Fixes and improvements


  • [query] Support for PIVOT (experimental)
  • [daemon] If a bucket is corrupted, the data will now be ignored by aggregation functions
  • [daemon] Greatly improve DELETE performance
  • [daemon] Prevent data from being corrupted in case of concurrent insertion and erasure on the same bucket
  • [daemon] Statistics are now grouped by UID
  • [query] Accept unknown unqualified columns in WHERE/PREWHERE clauses
  • [query] Fixed potential invalid get tagged count computation
  • [api] Added function to explicitly release memory during batch insertion

by Edouard Alligand

QuasarDB now a SAS IoT Partner

QuasarDB is now an official SAS IoT Partner. We are happy to say that QuasarDB can now connect with SAS ESP through a dedicated connector and SAS Viya with its ODBC driver.


by Edouard Alligand

QuasarDB 3.8.9 released

We are pleased to announce the immediate availability of QuasarDB 3.8.9. This is a bug fix release. All QuasarDB users of the "Crates" branch are encouraged to update to the 3.8.7 version.


Changes in this version


  • [daemon] If a bucket is corrupted, the data will now be ignored by aggregation functions
  • [daemon] Fix a potential deadlock if the database would do a concurrent write, prefix get, and massive eviction
  • [daemon] Greatly improve DELETE performance
  • [daemon] Prevent data from being corrupted in case of concurrent insertion and erasure on the same bucket
  • [query] Data far in the future (100+ years) can now be properly selected
  • [query] Properly dismiss invalid months and days combination at the parsing phase
  • [query] Reject invalid WHERE and aggregation combinations early in the client instead of sending them to the server


Get it here!

by Edouard Alligand

QuasarDB Beta 3.9.0 released

We are very pleased to announce the immediate availability of QuasarDB 3.9.0.


The 3.9.0 is a "beta" branch. Even minor version numbers are stable release, odd minor version numbers are beta. The current latest stable version as of this writing is 3.8.7.


This new major version introduce significant performance improvements to the aggregation engines, extended ASOF joins support, and overall improved usability and flexibility.


Last but not least, QuasarDB now has native support for AWS S3 as a storage backend!


Changes in this version


  • [persistence] Native support for AWS S3 as a persistence backend
  • [persistence] Greatly improved compaction performance
  • [persistence] Up to 2X cold queries performance increase
  • [query] Can ASOF JOIN against multiple tables, generated ranges, and find results
  • [query] Support for WHERE clause in DELETE and UPDATE
  • [daemon] Greatly improved the performance of asynchronous insertions
  • [daemon] Up to 100X performance gain for GROUP BY queries
  • [batch] Improve batch inserter performance when writing to mutliple tables
  • [batch] Added support to clone a blob/string into the batch writer
  • [query] Add support for IS NULL and IS NOT NULL in WHERE clauses
  • [query] Added experimental support for covariance and correlation computation
  • [daemon] Fixed a direct_prefix_get bug
  • [query] Use single quotes for queries, and double quotes for identifiers


Get it here!

by Edouard Alligand

QuasarDB 3.8.7 released

We are pleased to announce the immediate availability of QuasarDB 3.8.7. This is a bug fix release. All QuasarDB users are encouraged to update to the 3.8.7 version.


Changes in this version


  • [daemon] Fix a potential deadlock when multiple threads would load the same bucket from cold storage


Get it here!

by Edouard Alligand