Olexandra Dmytrenko

Developer, trainer, speaker and just a happy person

[Olexandra Dmytrenko @LadyInIT]

Several funny slides in the end of the talks at #devfest2025

[Olexandra Dmytrenko @LadyInIT]

Knew of a stack, knew of a deck, I wrote them both in #Java, but this is phrase is new for me :) https://t.co/sqTpfwBjNV

[Olexandra Dmytrenko @LadyInIT]

Хто хоче долучитись до створення українського #LLM? Робота знайдеться для всіх :) https://t.co/9zSp2TZEXv

[Olexandra Dmytrenko @LadyInIT]

A good explanation how a distributed scheduler works #cloud https://t.co/UKvMQvSavR

[Code Geek @codek_tv]

Top 7 Data Terms Explained

[Olexandra Dmytrenko @LadyInIT]

The way to certify your own writing, not the generated one, is simple and straightforward: just a record of what you do. #Grammarly

[Josep Ferrer @iamjosepferrer]

The Transformers architecture clearly explained 👇🏻

[Dr Milan Milanović @milan_milanovic]

𝗗𝗼 𝗬𝗼𝘂 𝗡𝗲𝗲𝗱 𝗧𝗼 𝗞𝗻𝗼𝘄 𝗔𝗹𝗹 𝗗𝗲𝘀𝗶𝗴𝗻 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀?

The answer is no. Even though we have 23 design patterns, around 10 are mostly used in everyday development. Knowing which patterns exist overall is good, but you need to know these very well.

Design patterns can be divided into three main types:

𝟭. 𝗖𝗿𝗲𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀

These design patterns deal with object creation mechanisms, trying to create objects in a manner suitable to the situation.

Important patterns in this group are:

𝗙𝗮𝗰𝘁𝗼𝗿𝘆: This pattern allows delegating the instantiation logic to factory classes. The Factory Method creates objects without exposing the instantiation logic to the client.

𝗦𝗶𝗻𝗴𝗹𝗲𝘁𝗼𝗻: The Singleton pattern ensures that a class has only one instance and provides a global point of access to it. It's useful when exactly one object is needed to coordinate actions across the system.

𝟮. 𝗦𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗮𝗹 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀

These patterns deal with the composition of classes and objects that form larger structures.

Important patterns in this group are:

𝗔𝗱𝗮𝗽𝘁𝗲𝗿: This pattern works as a bridge between two incompatible interfaces. It wraps an existing class with a new interface to become compatible with the client's interface.

𝗙𝗮𝗰𝗮𝗱𝗲: The Façade pattern provides a unified interface to a set of interfaces in a subsystem. Façade defines a higher-level interface that makes the subsystem easier to use.

𝗗𝗲𝗰𝗼𝗿𝗮𝘁𝗼𝗿: This pattern dynamically adds/overrides behavior in an existing method of an object. This pattern provides a flexible alternative to subclassing for extending functionality.

𝗣𝗿𝗼𝘅𝘆: The Proxy pattern provides a surrogate or placeholder for another object to control access to it. In its most general form, a proxy is a class functioning as an interface to something else.

𝟯. 𝗕𝗲𝗵𝗮𝘃𝗶𝗼𝗿𝗮𝗹 𝗣𝗮𝘁𝘁𝗲𝗿𝗻𝘀

These patterns are specifically concerned with communication between objects and how they interact and distribute work.

Important patterns in this group are:

𝗖𝗼𝗺𝗺𝗮𝗻𝗱: The Command pattern encapsulates a request as an object, thus allowing users to parameterize clients with queues, requests, and operations.

𝗧𝗲𝗺𝗽𝗹𝗮𝘁𝗲 𝗠𝗲𝘁𝗵𝗼𝗱: This pattern defines the program skeleton of an algorithm in a method called template method, which defers some steps to subclasses.

𝗦𝘁𝗿𝗮𝘁𝗲𝗴𝘆: The Strategy pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable. Strategy lets the algorithm vary independently from clients that use it.

𝗢𝗯𝘀𝗲𝗿𝘃𝗲𝗿: This pattern defines a one-to-many dependency between objects so that all its dependents are notified and updated automatically when one object changes state.

Check out this helpful cheat sheet below.

#softwareengineering #programming #developers

[Olexandra Dmytrenko @LadyInIT]

Have fun yourself with #RaspberryPi and #SpringAI https://t.co/f1YUMgNKhz

[Olexandra Dmytrenko @LadyInIT]

Трохи #ML для початківців https://t.co/DP6YrinUXL

[Olexandra Dmytrenko @LadyInIT]

A nice resource to learn #IT https://t.co/jL63IvUlFw

[Olexandra Dmytrenko @LadyInIT]

https://t.co/ahL1N5PCsp #ШІ, генерація #біткоін чи викиди парникових газів? Хмммм, хто ж переможе в статистиці частих згадувань на #Google

[Olexandra Dmytrenko @LadyInIT]

https://t.co/f2KfHZOGVh Nice #programming practice

[Olexandra Dmytrenko @LadyInIT]

#AI Marathon https://t.co/S4ULPevJUA #GlobalLogic

[Olexandra Dmytrenko @LadyInIT]

Tease your Math brain https://t.co/ccGIVi1xiM

[DOU @doucommunity]

Президент підписав закон про мобілізацію. Документ набере чинності через місяць після оприлюднення https://t.co/egadwXLucZ

[Google Cloud Tech @GoogleCloudTech]

Spend your extra day exploring how organizations can use #AI and #ML to transform their business processes.

Enroll in our "Innovating with Google Cloud Artificial Intelligence" course at no cost today → https://t.co/j6K4XMEK6W

[Sebastian Sigl @sesigl]

I interviewed over 70 backend engineers in the last 2 years.

I created a Notion based "Learn Backend Development Pack V4" that contains a learning path to become a backend dev based on ONLY FREE resources.

Retweet and reply with "free" and I'll DM it to you.

(need to follow)

[Olexandra Dmytrenko @LadyInIT]

Хто хоче знати більше про #тестування ПЗ - ось хороший ресурс https://t.co/84rQAoNCGu

[Alex Xu @alexxubyte]

Explaining 8 Popular Network Protocols in 1 Diagram. The method to download the high-resolution PDF is available at the end.

Network protocols are standard methods of transferring data between two computers in a network.

1. HTTP (HyperText Transfer Protocol)
HTTP is a protocol for fetching resources such as HTML documents. It is the foundation of any data exchange on the Web and it is a client-server protocol.

2. HTTP/3
HTTP/3 is the next major revision of the HTTP. It runs on QUIC, a new transport protocol designed for mobile-heavy internet usage. It relies on UDP instead of TCP, which enables faster web page responsiveness. VR applications demand more bandwidth to render intricate details of a virtual scene and will likely benefit from migrating to HTTP/3 powered by QUIC.

3. HTTPS (HyperText Transfer Protocol Secure)
HTTPS extends HTTP and uses encryption for secure communications.

4. WebSocket
WebSocket is a protocol that provides full-duplex communications over TCP. Clients establish WebSockets to receive real-time updates from the back-end services. Unlike REST, which always “pulls” data, WebSocket enables data to be “pushed”. Applications, like online gaming, stock trading, and messaging apps leverage WebSocket for real-time communication.

5. TCP (Transmission Control Protocol)
TCP is is designed to send packets across the internet and ensure the successful delivery of data and messages over networks. Many application-layer protocols build on top of TCP.

6. UDP (User Datagram Protocol)
UDP sends packets directly to a target computer, without establishing a connection first. UDP is commonly used in time-sensitive communications where occasionally dropping packets is better than waiting. Voice and video traffic are often sent using this protocol.

7. SMTP (Simple Mail Transfer Protocol)
SMTP is a standard protocol to transfer electronic mail from one user to another.

8. FTP (File Transfer Protocol)
FTP is used to transfer computer files between client and server. It has separate connections for the control channel and data channel.

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