Programming Languages & Runtimes

"Instant On" for applications is essential in cloud and servlerless environments where scale-to-zero is used to minimize costs without introducing high latency for the application user. CRIU is a powerful technology that can be used to achieve fast startup times. However, CRIU alone is not sufficient, there are many factors that need to be addressed in order to achieve a successful restore. Join Tobi and Tom as they demonstrates how Liberty InstantOn leverages OpenJ9 CRIU Support to achieve fast startup time while keeping applications functionally sound.

Experience level:

Intermediate

Programming Languages & Runtimes

GraalVM: Holy Grail of Polyglots

Amit Kumar Mondal (Deutsche Telekom AG)

Every Java programmer knows what a JVM is and GraalVM is such a next-level JVM that supports Truffle polyglot framework. It's also a high-performance and efficient runtime designed to accelerate the execution of applications written in Java and other JVM languages while also providing a high performance runtime for JavaScript, Ruby, R, Python etc. and LLVM-based languages such as C, C++, Go, and Rust. Therefore, GraalVM’s polyglot capability enables us to write a single application in different languages leveraging the best from all the worlds.

Experience level:

Beginner

Programming Languages & Runtimes

Practical introduction to OpenTelemetry tracing

Nicolas Fränkel (Hazelcast)

Tracking a request’s flow across different components in distributed systems is essential. With the rise of microservices, their importance has risen to critical levels. Some proprietary tools for tracking have been used already: Jaeger and Zipkin naturally come to mind.

Observability is built on three pillars: logging, metrics, and tracing. OpenTelemetry is a joint effort to bring an open standard to them. Jaeger and Zipkin joined the effort so that they are now OpenTelemetry compatible.

Experience level:

Beginner

Programming Languages & Runtimes

Follow your code: Node.js debugging

Gireesh Punathil (IBM)

A large percentage of Node.js application misbehavior can be effectively diagnosed and root cause identified through the in-built tracing capabilities of Node.js/v8. There are a number of under-documented, yet very powerful tracing options which we can leverage in development, testing and production phases to validate that the application architecture and design is indeed reflected in the code or not, without ever instrumenting it.

Experience level:

Beginner

Programming Languages & Runtimes

Memory efficiency with Closures

Gireesh Punathil (IBM)

Memory Leaks leading to undesired growth and exhaustion of resources are by far the most common production problem reported on enterprise scale applications. Closure, a powerful semantic feature in functional programs which are used pervasively in modern languages, is a prominent source of unanticipated memory leaks. In this presentation, I will explain most common use cases where Closures are used and their implications to memory retention.

Experience level:

Intermediate

Programming Languages & Runtimes

Production anomalies: stories from the field

Gireesh Punathil (IBM)

There are a number of interesting and useful stories from enterprise Java and Javascript workloads - ranging from common memory tuning issues that affect the traffic efficiency, to extremely complex multi-thread race conditions leading to application crash, these exciting stories provide vital insights on the platform's interactions with common workloads.

Experience level:

Beginner

Programming Languages & Runtimes

Security - TLSv1.3 is the way ahead

Pasam Soujanya (IBM)

Gireesh Punathil (IBM)

With proliferation of digitisation, internet security has become of the most important aspects of our daily life - by virtue of the dependency of various transactions that carry out through that channel. Irrespective of the languages, frameworks and deployment targets in which these applications are developed or deployed, TLS has become the de-facto flag-bearer of data security at the network level. TLS too has evolved through years to cater to diverse needs of the modern workload.

Experience level:

Intermediate

Programming Languages & Runtimes

The Future is bright with Structured Concurrency in Java

Balkrishna Rawool (ING Bank NV)

This talk introduces the concepts of virtual threads and structured concurrency in Java. It explains how virtual threads enable Structured Concurrency and then compares the current concurrency API (CompletableFuture) with Structured Concurrency API with multiple examples.

Experience level:

Intermediate

Programming Languages & Runtimes

Choosing the Right Level of Consistency in Microservices

Todd Little (Oracle)

Contrary to popular opinion, there is no one size fits all solution to ensuring data consistency across microservices. One must first determine how consistent your data must be for your application as there are many approaches available, providing a range of consistency guarantees. This session will cover several common approaches to data consistency in microservices using the Oracle Transaction Manager for Microservices (MicroTx).

Experience level:

Beginner

Programming Languages & Runtimes

5 years of Jakarta EE

Tatjana Obradovic (Eclipse Foundation)

This session will point to the benefits of being part of an open source community, encourage and motivate developers to get involved in open source software in general. I will be focusing on Jakarta EE open source technology, as well as give an overview of the progress Jakarta EE has made so far (Jakarta EE 10) and future plans (Jakarta EE 11).

Experience level:

Beginner

Programming Languages & Runtimes