Introducing Delta4C: a high speed, adaptive, lossless compressor for timeseries

Posted by Edouard on 08 May 2019

This post is part of a series about the challenges behind database performance and how to accurately assess it.

Why compression matters so much for timeseries data

Whatever database engine you are using, efficient disk storage is always welcomed. When your 10 GiB become 100 GiB once in the database, that’s never a nice thing!

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Tags: quasardb, time series, performance, compression, managed

Should you care about performance?

Posted by Edouard on 29 Apr 2019
This post is part of a series about the challenges behind database performance and how to accurately assess it.

You don’t care about performance

When we started selling QuasarDB, we focused on its performance advantages and touted how great they were. The logic behind that was obvious: we were very strong in this area; thus we should bring the battle to where we are strong!

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Tags: quasardb, software, time series, performance

Benchmarking timeseries ingress

Posted by Edouard on 16 Apr 2019
This post is part of a series about the challenges behind database performance and how to accurately assess it.

Purpose of an ingress benchmark

When evaluating a timeseries database management system (later referred as TSDBMS or TSDB), one important dimension is the ingress speed (a.k.a. insertion or ingestion), that is, how fast the database can store new data points.

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Tags: quasardb, time series, performance

Database performance

Posted by Edouard on 12 Mar 2019

This port is the first in a series about the challenges behind database performance and how to accurately assess it. In future posts, we will dig more into the specifics of benchmarks and design choices.

The Penrose stairs of performance

If you are following database innovation you can see that nearly every database vendor out there has at least one benchmark putting them in the first place. With every vendor selling the fastest database there is, you end up in a Penrose stairs situation where everyone is faster than everyone.

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Tags: memory, optimization, process, software, performance

Secure by default

Posted by user on 18 Jul 2017

The security debacle. As a database user or administrator, you may have learnt that MongoDB recently took a very serious hit. A hit of over 28,000 hacked installs.

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Tags: Security, quasardb, Uncategorized

Time series in quasardb

Posted by user on 10 Apr 2017

At first an interrogation - At the beginning, there was a question. Why are we waiting for machines to give us an answer? Why aren't we able to analyze everything in real time?

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Tags: analytics, big data, quasardb, time series, Uncategorized

C++ Braced Initialization

Posted by user on 05 Mar 2017

Since C++ 11 it's possible to use braces for construction and initialization. Although this is something you could ignore for the code you write, it's obviously important to know for the code you may read.

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Tags: cpp, braces, initialization, Uncategorized

When noexcept?

Posted by user on 12 Dec 2016

In a previous post, we had a look at the new constexpr keyword that has been introduced in C++ 11. Today we'll study another new fancy specifier: noexcept.

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Tags: cpp, noexcept, Uncategorized

Demystifying constexpr

Posted by user on 22 Nov 2016

C++ 11 and C++ 14 came with a lot of new features. People tend to focus on lambdas and rvalue references, but today I’d like to talk about constexpr.

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Tags: c++, constexpr, Uncategorized