This blog post gives users with a basic knowledge of SQL a brief introduction to querying q/kdb databases, with a focus on filtering data. If you are experimenting on an on-disk database, please read all the way to the bottom before starting as there are some important points about accessing partitioned data structures! q has its own syntax for querying …
Kafka with kdb+ and Java
Kafka is a distributed messaging service used to achieve a low-latency, high-throughput transfer of data using persistent logs to prevent loss of data. This blog will: Illustrate the various components used in Kafka. Show how Kafka can be used to share data between different technologies, for example, a Java producer and a kdb+ consumer. Highlight a use case for Kafka …
Grafana kdb+ Adaptor Update
One of the most requested features to our kdb+ Grafana adaptor was the ability to create panels from the results of server side functions. This most recent update to the adaptor continues to build on the SimpleJSON datasource created by Grafana by working around the limitation of the single drop down menu for queries, whilst also allowing parameters to be supplied. The adaptor is also integrated into TorQ …
TorQ Release v3.4
We are delighted to announce release v3.4 of TorQ, the latest instalment of our kdb+ framework; which can be found here. The main changes are outlined below. Grafana Adaptor Integration As part of this update we have included AquaQ’s recent release, the Grafana-KDB adaptor. With this inclusion, the adaptor script is loaded in to all TorQ processes, allowing connection via a Grafana session. Full installation & usage can be found in the original blog and TorQ documentation. …
Grafana – kdb+ adaptor
AquaQ Analytics are often involved in projects using different visualisation tools connected to kdb+. We have recently spent some time reviewing and then implementing a simple Grafana-kdb+ adaptor. This open-source script has been developed using the inbuilt Grafana SimpleJSON datasource and comes with the capability of table and time series visualisation and manipulation. Instructions for installation and usage can be …
kdb+ 3.6: anymap
The recent release of kdb+3.6 brought a new data structure: anymap. As database nerds, this is very exciting news for us. We thought we’d have a play with it to see how it could be used. New Nested Lists The anymap features replaces all the previous structures used to create nested lists. It also supports storing non-uniform values within the …
Online kdb+ Training – New Site and New Features
We’ve made some big changes and additions to our online kdb+ training site. We’ve been using it internally for some time now, but it’s time to release it to the world! We feel the changes extend the reach of the training site to be a useful tool for both new and experienced kdb+ developers and support personnel. Challenge Site We …
FREE kdb+ Trading Analytics Workshop – NY
Following the success of our joint event in London this summer with our partners Datawatch Panopticon we have decided to run another FREE interactive workshop in New York this September. The date and venue are set – Wednesday 12th September 2018 at the Roosevelt Hotel, New York This workshop is designed for people who want to make full use of …
AquaQ releases q-REST Web Interface
AquaQ Analytics is pleased to announce the release of q-REST v1.0 – a RESTful web interface for kdb+. This open source package has been designed as a convenient way for web clients to make requests to a kdb+ instance using the JSON format. The package can be easily integrated with Swagger UI, Docker and standard authentication methods such as SSO, allowing users to easily implement the …