Gerardo López

[Out Of Context Football @nocontextfooty]

https://t.co/7z2Ob2sQOa

[@LuisValLe @LuisValLe_A]

El Internet es arte ✨

#Brasil 🇧🇷 contra #Noruega 🇳🇴

[Alex Xu @alexxubyte]

Apache Kafka vs. RabbitMQ

[Alex Xu @alexxubyte]

What is the SOLID Principle?

SOLID offers guidelines to create software that is easy to understand, modify, and extend.

The SOLID acronym stands for:

S -> Single Responsibility Principle
O -> Open/Closed Principle
L -> Liskov Substitution Principle

[Krishna Agrawal @Krishnasagrawal]

SQL Interview Cheatsheet 📘

#sql

[Python Developer @PythonDvz]

Pandas vs. PySpark 🔥

Whether you're working with small data on your laptop or big data on clusters, Pandas and PySpark are the two engines driving modern data analysis.
When I started out, I constantly found myself asking:
"How do I do this Pandas operation in PySpark?"
or
"What's the PySpark equivalent of this DataFrame task?"
Switching between them wasn’t always easy — different syntax, different workflows. So I built this simple, side-by-side cheat sheet to make it painless!

Here’s what’s inside:
➡️ Select, filter, and sort rows easily
➡️ Group, aggregate, and join like a pro
➡️ Handle missing data smartly
➡️ Translate logic smoothly between Pandas and PySpark

Pro Tip: Mastering both gives you the power to move seamlessly between small projects and massive data pipelines.

And always remember:
"Pandas is where you learn the art. PySpark is where you learn to scale."

#Pandas #PySpark #python

[Aurimas Griciūnas @Aurimas_Gr]

𝗗𝗮𝘁𝗮 𝗣𝗶𝗽𝗲𝗹𝗶𝗻𝗲𝘀 𝗶𝗻 𝗠𝗮𝗰𝗵𝗶𝗻𝗲 𝗟𝗲𝗮𝗿𝗻𝗶𝗻𝗴 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 can become complex and for a good reason 👇

It is critical to ensure Data Quality and Integrity upstream of ML Training and Inference Pipelines, trying to do that in the downstream systems will cause unavoidable failure when working at scale.

There is a ton of work to be done on the Data Lake or LakeHouse layer. 𝗦𝗲𝗲 𝘁𝗵𝗲 𝗲𝘅𝗮𝗺𝗽𝗹𝗲 𝗮𝗿𝗰𝗵𝗶𝘁𝗲𝗰𝘁𝘂𝗿𝗲 𝗯𝗲𝗹𝗼𝘄.

𝘌𝘹𝘢𝘮𝘱𝘭𝘦 𝘢𝘳𝘤𝘩𝘪𝘵𝘦𝘤𝘵𝘶𝘳𝘦 𝘧𝘰𝘳 𝘢 𝘱𝘳𝘰𝘥𝘶𝘤𝘵𝘪𝘰𝘯 𝘨𝘳𝘢𝘥𝘦 𝘦𝘯𝘥-𝘵𝘰-𝘦𝘯𝘥 𝘥𝘢𝘵𝘢 𝘧𝘭𝘰𝘸:

𝟭: Schema changes are implemented in version control, once approved - they are pushed to the Applications generating the Data, Databases holding the Data and a central Data Contract Registry.

Applications push generated Data to Kafka Topics:

𝟮: Events emitted directly by the Application Services.

👉 This also includes IoT Fleets and Website Activity Tracking.

𝟮.𝟭: Raw Data Topics for CDC streams.

𝟯: A Flink Application(s) consumes Data from Raw Data streams and validates it against schemas in the Contract Registry.
𝟰: Data that does not meet the contract is pushed to Dead Letter Topic.
𝟱: Data that meets the contract is pushed to Validated Data Topic.
𝟲: Data from the Validated Data Topic is pushed to object storage for additional Validation.
𝟳: On a schedule Data in the Object Storage is validated against additional SLAs in Data Contracts and is pushed to the Data Warehouse to be Transformed and Modeled for Analytical purposes.
𝟴: Modeled and Curated data is pushed to the Feature Store System for further Feature Engineering.
𝟴.𝟭: Real Time Features are ingested into the Feature Store directly from Validated Data Topic (5).

👉 Ensuring Data Quality here is complicated since checks against SLAs is hard to perform.

𝟵: High Quality Data is used in Machine Learning Training Pipelines.
𝟭𝟬: The same Data is used for Feature Serving in Inference.

Note: ML Systems are plagued by other Data related issues like Data and Concept Drifts. These are silent failures and while they can be monitored, we can’t include it in the Data Contract.

Let me know your thoughts! 👇

#AI #MachineLearning #DataEngineering

[Gerardo López @GLR_08]

@Tech_Baddo C

[Gerardo López @GLR_08]

@tendenciasmx Final feliz 😇

[Saquib Aftab @iamsaquibdev]

Common Java Interview Coding Questions ✅️

[Alex Xu @alexxubyte]

Top Software Architectural Styles.

[Alex Xu @alexxubyte]

Big O Notation 101: The Secret to Writing Efficient Algorithms

[Vini Jr. @vinijr]

Eu farei 10x se for preciso. Eles não estão preparados.

[Speedline @speedlne]

Rodri is good midfielder but everyone knows @vinijr is the best player in the world now. #BallonDor

[Speedline @speedlne]

Vinicius jnr 🐐

[Endricky @Endricky9]

😮‍💨🥶

[Speedline @speedlne]

Today is the saddest day in football history.

[Alex Xu @alexxubyte]

8 Key Concepts in DDD

[Swift Language @SwiftLang]

As part of our vision for Swift to be a widely-used language for a wide variety of use cases and platforms, today at @SwiftServerConf we open sourced some early work on Swift/Java interoperability: https://t.co/9LIrLfsjV2. Excited to partner with others to expand this. @java

[Gerardo López @GLR_08]

@starbuxman Spring Tips (youtube