JCON EUROPE 2023

Time-series data, or data being associated with its respective time of occurrence, is everywhere. From the obvious cases, such as metrics, observability, IoT data, all the way to logs, invoicing, or payment records. While storing some of these in relational databases is standard practice, people often reach for specific time-series databases when volume gets high. But imagine if you could have all of them in the same database: PostgreSQL.

Join me for this session to learn more about the different types of time-series data and have a look at the naive, the native, and the scalable approaches to storing it in PostgreSQL. We’ll contrast their usability and performance characteristics and show you why Postgres is the only database you need!

More than 6 billion Java Card based solutions are deployed every year for:
- Telecom (SIM and eSIM)
- Mobile phone and wearables
- Finance (payment applications e.g. Credit Card)
- Government and Identity e.g. ID Cards and Passports
- Automotive
- IoT Security e.g. Smart meter and Gateway
- Other Java Card Applications include Pay-TV, Digital Rights Management, transportation ticketing, and much more

In this live-coding session, you will learn the basics on
- how the ‘Java Card’ platform differs from ‘Java’
- how to develop a Java Card Applet
o best practices
o debugging and deploying the applet
o how to use the platform cryptography and how to use it for
a Car Connectivity Consortium Digital Key Applet
- how to interact with the Java Card Applet (host implementation)

Prerequisites:
To actively participate in this live-coding session, you will need
* your own notebook running a recent Microsoft Windows operating system
* local admin rights to install software and drivers
* the Java64 environment up and running
* an active internet connection