Schedule

Let's look at different approaches to loading objects from PostgreSQL.

With the appearance of virtual threads, ThreadLocal is no longer the only solution for context transfer — Java 21 introduced ScopedValue. But when to use what? Which is faster and uses less memory?

If your “hello world” Spring app needs 512 MB RAM and launches in 10 seconds, you’re not building an app — you’re running a memory leak with REST endpoints.

JDK Flight Recorder is not a new technology that has undergone several rebirths in its history. The next release of JDK 25 has also not bypassed JDK Flight Recorder and brought with it new features.

How we managed to reduce CPU consumption by almost three times, and at the same time reduce the response time to user requests and the actual intensity of allocations.

Using the example of a classic multithreading task, I will consider some misconceptions related to virtual threads. For this, I will use an engineering approach based on measurements.

Let's talk about the history of degradations, how they were found and how they were fixed, and what accidents happened.

I'll tell you how some of the old (compressed oops and compressed class pointers) and new (compact object headers) settings affect actual memory usage, and what to do if your application is approaching the 32 GB limit.

Let's look at different approaches to loading objects from PostgreSQL.

I will trace the path of retries from repeated attempts in real life to their implementation in microservice architectures. I'll tell you how retries have evolved in life, programming, and the Java ecosystem. Which strategies and tools help to achieve reliability, and which ones break everything.

If your “hello world” Spring app needs 512 MB RAM and launches in 10 seconds, you’re not building an app — you’re running a memory leak with REST endpoints.

We will discuss the issue of the development with Spring in conjunction with JPA, the related performance problem, and also suggest a solution.

Why the service layer should return an Entity, not a DTO. Why fetching small collections can lead to million-dollar datasets. Is it worth fetching deep-nested entities. How turning off autocommit can dramatically increase application throughput.

When it comes to OAuth 2 and working with JWT, a lot of questions arise while writing code and you have to remember a lot of nuances. The talk contains everything that Google is most often asked about. For security lovers and understanders, in one narrative using the example of Spring.

We'll look at Quarkus, Panache, gRPC and other "non-obvious" things. We will discuss where they can be useful, what kind of pitfalls are there and how to expand professional horizons.

Java 25 was released on September 16, and according to the tradition of JPoint and Joker, we will analyze all the key changes in detail.

How we managed to reduce CPU consumption by almost three times, and at the same time reduce the response time to user requests and the actual intensity of allocations.

Using the example of a classic multithreading task, I will consider some misconceptions related to virtual threads. For this, I will use an engineering approach based on measurements.

I will tell you about the structure and operation of the main debugging tools in JVM. I will give examples of debugging distributed applications, and also tell you about other non-trivial methods of debugging in JVM.

I'll tell you how some of the old (compressed oops and compressed class pointers) and new (compact object headers) settings affect actual memory usage, and what to do if your application is approaching the 32 GB limit.

Rich Errors: reinvention of Checked Exceptions. I will tell you the background of the appearance of Rich Errors, what alternatives there are in other ecosystems and why we will never have real Union types.

KEEPs that we have been waiting for and have finally got, the ones that raise questions and the ones that raise open doubts.

We'll take a look at how exactly Kotlin Flow handles one of the heaviest services on the web. Only real examples and no tedious retelling of documentation!

API often has to be checked manually — Postman, curl, Insomnia, HTTP clients in the IDE, each with their own limitations. Connekt combines these scenarios and turns manual checks into live code that is reusable. The talk provides a comparison of approaches and a look "under the hood" of the tool.

I'll tell you and show you with real-world code examples how we use coroutines and flow at SberDevices to solve non-standard tasks. We'll consider the problem of the transition between the world of callbacks and the world of coroutines. I'll show you how we implemented lazy subscriptions to our backend messages and used them to solve the backpressure problem for a shared queue for messaging with the backend.

Increasing the efficiency of writing code in IntelliJ IDEA using Vim.

A modern senior developer working with Spring is simply obliged to understand Kubernetes. In the talk, you will find out what you need to know, what the pitfalls are, what to look for, and how to use deployment tools in Kubernetes.

I will tell you about the structure and operation of the main debugging tools in JVM. I will give examples of debugging distributed applications, and also tell you about other non-trivial methods of debugging in JVM.

How does source code turn into graphs, how do compilers work with these structures, and how can developers put them to use? We’ll explore the compiler frontend’s internal representations through a practical example of taint analysis.

Java 25 was released on September 16, and according to the tradition of JPoint and Joker, we will analyze all the key changes in detail.

With the appearance of virtual threads, ThreadLocal is no longer the only solution for context transfer — Java 21 introduced ScopedValue. But when to use what? Which is faster and uses less memory?

JDK Flight Recorder is not a new technology that has undergone several rebirths in its history. The next release of JDK 25 has also not bypassed JDK Flight Recorder and brought with it new features.

I will analyze the pitfalls when interacting with Cassandra and show the implementation of an effective consumer for a variety of Kafka topics in one stream.

Building your own cloud solution is often considered a rocket science. I'll show you that it's not as scary as it seems.

Using examples, I'll show you which metrics I recommend collecting for an abstract web application (for each component, including APIs, databases, and queues) to make it easier and faster to investigate incidents and various performance issues.

Let's talk about the history of degradations, how they were found and how they were fixed, and what accidents happened.

API often has to be checked manually — Postman, curl, Insomnia, HTTP clients in the IDE, each with their own limitations. Connekt combines these scenarios and turns manual checks into live code that is reusable. The talk provides a comparison of approaches and a look "under the hood" of the tool.

We will discuss the issue of the development with Spring in conjunction with JPA, the related performance problem, and also suggest a solution.

Why the service layer should return an Entity, not a DTO. Why fetching small collections can lead to million-dollar datasets. Is it worth fetching deep-nested entities. How turning off autocommit can dramatically increase application throughput.

When it comes to OAuth 2 and working with JWT, a lot of questions arise while writing code and you have to remember a lot of nuances. The talk contains everything that Google is most often asked about. For security lovers and understanders, in one narrative using the example of Spring.

What a programmer's job consists of, where the inefficiencies and optimization possibilities are in it, what cognitive load is and how we deal with it.

Increasing the efficiency of writing code in IntelliJ IDEA using Vim.

A modern senior developer working with Spring is simply obliged to understand Kubernetes. In the talk, you will find out what you need to know, what the pitfalls are, what to look for, and how to use deployment tools in Kubernetes.

I will trace the path of retries from repeated attempts in real life to their implementation in microservice architectures. I'll tell you how retries have evolved in life, programming, and the Java ecosystem. Which strategies and tools help to achieve reliability, and which ones break everything.

When it comes to OAuth 2 and working with JWT, a lot of questions arise while writing code and you have to remember a lot of nuances. The talk contains everything that Google is most often asked about. For security lovers and understanders, in one narrative using the example of Spring.

We will discuss the issue of the development with Spring in conjunction with JPA, the related performance problem, and also suggest a solution.

Why the service layer should return an Entity, not a DTO. Why fetching small collections can lead to million-dollar datasets. Is it worth fetching deep-nested entities. How turning off autocommit can dramatically increase application throughput.

What a programmer's job consists of, where the inefficiencies and optimization possibilities are in it, what cognitive load is and how we deal with it.

With the appearance of virtual threads, ThreadLocal is no longer the only solution for context transfer — Java 21 introduced ScopedValue. But when to use what? Which is faster and uses less memory?

I will analyze the pitfalls when interacting with Cassandra and show the implementation of an effective consumer for a variety of Kafka topics in one stream.

We'll take a look at how exactly Kotlin Flow handles one of the heaviest services on the web. Only real examples and no tedious retelling of documentation!

Let's look at different approaches to loading objects from PostgreSQL.

We're talking about schedules, sessions, and activities. Join us in the hall or online to find out what will be waiting for you in the near future!

Let's talk about artificial and natural intelligence, wonder whether artificial intelligence will replace developers and what they should prepare for, as well as philosophize about what awaits developers (and everyone else) in the brave new world and how the development process will change.

An emergency has occurred. Nexign’s lead engineer, Java code genius Alexey, has been attacked by cyber saboteurs from a rival organisation and has lost his working memory. We invite party guests to help restore all knowledge about projects, technologies and even the Nexign company.

Lightning talks are a great format to quickly discuss a topic and find like-minded people. You will enjoy 10-minute talks on professional or near-professional topics and lively discussions.

Today, quantum technologies are one of their most rapidly developing areas. Already today, quantum computers are beginning to solve practical problems in the field of optimization and machine learning, quantum communications are being implemented in telecommunication systems, and quantum sensors are being used for tasks, for example, in the field of biomedicine. Understanding the possibilities of quantum technologies is a step towards understanding the future of the world.

We'll be summarize the results of the conference, recall the highlights and tell you about our future plans. Join us in the hall or online so you don't miss anything!