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Relationships in Databases: One-to-One, One-to-Many, and Many-to-Many

Relationships in databases describe how data in different tables are connected.
There are three types of relationships: one-to-one, one-to-many, and many-to-many.
A one-to-one relationship links each record in Table A to exactly one record in Table B.
A one-to-many relationship allows one record in Table A to be linked to multiple records in Table B and vice versa.

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Launched a public beta test of next-generation virtual fitting rooms based on artificial intelligence

A team has launched a public beta test for virtual fitting rooms based on AI, after extensive market research.
They chose photo processing over VR and 3D models for accuracy and cost-effectiveness.
The fitting rooms aim to simplify the online shopping experience by allowing users to try on items virtually.
Users upload a photo of a product, then their own photo, and the algorithm transfers the product onto their image.
The Virton product is currently in open testing, aiming to enhance online store performance and user experience.
Future plans include improving accuracy, adding more features, and launching a client application.
The roadmap also involves optimizing speed, integrating widgets for online stores, and expanding search capabilities.
Interested users can try Virton for free on their website during the beta testing phase.
Online store owners are encouraged to participate in pilot projects to integrate the Virton fitting room.
Virton aims to revolutionize online shopping with AI-powered virtual fitting rooms in the near future.

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Recall Not Quite Recalled

Microsoft has revived its controversial feature 'Recall' after a temporary pause in 2024.
Recall, an Orwellian 'innovation', took screenshots of customer's computers every few seconds, raising privacy concerns.
Despite the backlash, Microsoft has reintroduced the feature to testers on an opt-in basis.
Privacy advocates express disappointment as Recall captures messages and emails from others, turning it into a searchable archive.

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Medium

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Optimize KDB+/Q Table Iteration for Crossable Entries

Efficient table iteration is crucial for maximizing Kdb+’s performance.
Leverage Kdb+’s built-in functions for vectorized operations, reducing overhead and improving performance.
Use each and each-both operators for applying functions to individual elements or pairs of elements in a table.
Consider advanced techniques like indexing and partitioning to further enhance Kdb+ code performance.

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Dev

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Building a Developer Community from Scratch

Three friends in Mombasa started OnlyDevs to create a tech community accessible to all, without prior experience or funding, driven by their belief in the mission.
Despite initial lack of resources and structure, they hosted events, taught themselves community management, poured in effort, and created a welcoming environment for tech enthusiasts.
OnlyDevs made a significant impact, helping individuals secure internships, transition to full-time developers, and find support, showcasing the value of genuine connections over material rewards.
The founders faced challenges as people often joined communities for personal gain, leading to feelings of exploitation and moments of disillusionment when seeing their initiatives being commercialized by others.
Building and sustaining a community took an emotional toll on the founders, as they struggled with users leaving without acknowledgment and the weight of constantly giving without receiving much in return.
The arrival of sponsored communities with more resources and structured approaches posed a challenge, shifting the focus from personal connections to grand events, leading to a loss of intimacy in interactions.
Ultimately, OnlyDevs quietly faded out due to founders' exhaustion and lack of external support, emphasizing the need for continuous commitment and shared responsibility in community building.
The experience taught valuable lessons about the reality of community building, highlighting the importance of resilience, consistency, and a supportive network to sustain initiatives in the long run.
While OnlyDevs may not have lasted, the impact it had on individuals and the lessons learned remain significant, underscoring the enduring value of genuine efforts and connections in community initiatives.
The founders encourage active participation and support in communities, emphasizing that sustaining such spaces relies on individuals dedicated to keeping them alive even amidst challenges.
OnlyDevs exemplifies the power of creating something genuine and impactful, even if imperfect, showcasing that real connections and intentions can leave a lasting legacy beyond the lifespan of a community.

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Dockerizing a React Project with Nginx

This documentation outlines how to Dockerize a React application and serve it using Nginx, exposing the app on port 8000 using Docker.
To get started, create a Dockerfile in the root of your React project.
Build the Docker image and tag it with a name using the appropriate command.
Finally, run the Docker container and access the React app at http://localhost:8000.

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Medium

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Go Asynchronous Preemption: A deep look

Asynchronous preemption is a feature in Go that allows the runtime to pause running goroutines at safe points.
It solves the problem of goroutines getting stuck in tight loops and blocking other goroutines from running.
When a goroutine has been running for too long, a signal is sent to initiate preemption.
The runtime manipulates the stack frame to inject a function call instruction, forcing the goroutine to reach a safe point and enable preemption.

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Medium

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Microservices Are a Security Nightmare — Are Monoliths Actually the Safer Bet in 2025?

Monoliths are proving to be more secure, auditable, and manageable than people remember.
Teams are abandoning microservices for modular monoliths prioritizing security and operational simplicity.
Microservices come with a steep security cost, requiring securing multiple individual services.
Monoliths offer a smarter choice for many teams in terms of security and agility.

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Medium

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How I Minted My First Memecoin and Earned Fast Cash

Minting your own memecoin can be a lucrative way to earn money in cryptocurrency.
Phantom Mint provides a simple and beginner-friendly system for creating memecoins.
With Phantom Mint, you can start minting memecoins without any prior experience or large investments.
The system offers updates on the latest trends and opportunities in the crypto market.

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Dev

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What I Actually Do When I Say I'm “Working on My SaaS”

When saying 'I'm working on my SaaS,' it is not just about coding.
Tasks involved in 'working on my SaaS' include reading feedback, splitting time between development and marketing, spending time on support, debating features, marketing efforts, fixing bugs, doubting everything, and shipping consistently.
Reading feedback is a crucial step before starting any coding.
Splitting time between development and marketing is important to ensure visibility and engagement.

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Medium

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Comprehensions, Map, and Lambda Concepts in Python

Lambda functions are anonymous (unnamed) functions in Python that provide a concise way to define simple functions.
The map() function applies a given function to all items in an iterable (like a list). It returns a map object, which can be converted into a list.
List comprehensions provide a concise way to create lists.
You can perform more complex operations by using if-else inside a list comprehension.

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Medium

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✈️ The Delegation Bubble: Travel, Visas, Accommodation, and Pandemic Protocols

Eurovision, a complex project involving the movement of 3,000 people from 40+ countries, demonstrates the power of the delegation bubble.
The delegation bubble is an airtight ecosystem of health protocols, schedules, and movement controls ensuring the safe and successful execution of the event.
Key factors in the success of the delegation bubble include daily testing, zone separation, staggered rehearsals, contact tracing, and performance backups.
Lessons from Eurovision include the importance of considering people as deliverables, preparing contingency frameworks in advance, cultural intelligence, and thorough documentation.

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Dev

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From VMs to Unikernels: The Evolution of Application Deployment

Virtualization abstracts physical hardware to run multiple isolated environments on a single host.
Containerization shares the host OS kernel to isolate applications at the process level, resulting in lighter and faster deployments.
Unikernels are single-purpose, single-address-space images with only the required parts of the OS, making them ultra-secure and extremely lightweight.
In the unikernel model, both the application and essential OS components are compiled into a single binary, eliminating layers of abstraction and overhead.

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Medium

390

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Microservices Are Just SOA 2.0 in Disguise: Why Developers Say We’re Repeating History

Many developers see microservices as Service-Oriented Architecture (SOA) with new tools and names.
Although microservices were meant to fix issues of monoliths, they have reintroduced old problems and created new ones.
The promises of microservices are starting to feel familiar to the issues of SOA.
The question remains whether microservices can overcome the limitations SOA faced or if we are just repeating history.

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Medium

288

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9 Must-Know REST API Design Principles For Developers

REST API design principles are essential for creating high-quality and scalable APIs.
Adhere to the semantic meanings of HTTP methods and use appropriate status codes to enhance usability.
Provide clear and consistent error messages to improve debugging and user experience.
Implement input validation, versioning, pagination, filtering, sorting, HATEOAS, and security for robust APIs.

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