SShortSingh.
0
ProgrammingDEV Community ·

How to Build a Thread-Safe HTTP Server in Python Using Threading

A new developer tutorial on DEV Community walks through the concept of thread safety and its importance in concurrent programming. Thread safety ensures multiple threads can run simultaneously without corrupting shared data, similar to how a bank must coordinate ATM transactions to prevent errors. The guide uses Python's built-in http.server module to first build a basic single-threaded HTTP server, then extends it with the ThreadingMixIn class from the socketserver module to handle multiple client requests at once. The tutorial is aimed at beginners and explains core concepts like threads, processes, and shared resource management before introducing code. The goal is to help developers understand how to build efficient, concurrent servers suitable for real-world use cases.

0
ProgrammingDEV Community ·

Amazon S3 at 18: Why AWS's First Storage Service Still Powers the Cloud

Amazon S3 (Simple Storage Service), launched in 2006 as one of AWS's earliest offerings, remains a foundational component of modern cloud infrastructure. The object storage service stores data as objects inside buckets, supports individual files up to 5 TB, and guarantees 99.999999999% durability by replicating data across at least three availability zones. Unlike traditional file systems such as EBS or EFS, S3 offers unlimited capacity with no provisioning required and natively integrates with over 200 AWS services. It supports multiple storage classes — from S3 Standard for frequently accessed data to Glacier Deep Archive for long-term retention — allowing teams to balance cost against access needs. S3 is widely used as the backbone of data lakes, static website hosting, backup storage, and machine learning pipelines on AWS.

0
ProgrammingDEV Community ·

Amazon S3 Security, Performance and Infrastructure-as-Code Best Practices Explained

A technical guide covering Amazon S3 security, cost optimisation, and infrastructure-as-code using Terraform has been published as the second part of a two-part series. Since April 2023, all new S3 buckets have Block Public Access enabled by default, and since January 2023, all new objects are encrypted by default using SSE-S3 with AES-256. The guide recommends using SSE-KMS with a dedicated customer-managed key per sensitive bucket to enable auditing via AWS CloudTrail and enforce separation of responsibilities. For cost management, lifecycle policies can automatically transition objects across storage classes, while S3 Intelligent-Tiering handles unpredictable access patterns with no retrieval fees. The article also covers data protection features such as versioning, Object Lock in Compliance mode, and MFA Delete to guard against accidental or malicious deletion.

0
ProgrammingDEV Community ·

Anthropic's Model Context Protocol Aims to Standardize AI Tool Integration

Anthropic released the Model Context Protocol (MCP), an open standard, in late 2024 to address the fragmentation in how AI tools are built and shared across different language models. Currently, developers must write separate integration code for each AI platform — such as OpenAI, Anthropic, or Ollama — because each expects a different format. MCP acts as a universal interface, allowing a tool built once as an MCP server to work with any compatible client without modification. The protocol defines how clients discover available tools, how servers expose them in a standard format, and how tool calls and results are exchanged via JSON-RPC. Hundreds of pre-built MCP servers already exist for common use cases, including file system access, GitHub, PostgreSQL, and web search.

0
ProgrammingDEV Community ·

AWS Lambda: How Amazon's Serverless Compute Service Works and When to Use It

AWS Lambda, launched by Amazon in 2014, is a serverless compute service that runs code in response to events without requiring users to manage any underlying infrastructure. It has become the most widely used AWS compute service after EC2, handling scaling, availability, monitoring, and patching automatically. Each function execution follows a lifecycle that includes either a cold start — involving code download, micro-VM creation, and runtime bootstrap — or a faster warm start that reuses an existing environment. Lambda supports multiple programming languages and offers configurable memory from 128 MB to 10 GB, with execution timeouts of up to 15 minutes. Pricing is based on the number of invocations and memory-duration usage, with a free tier covering one million invocations and 400,000 GB-seconds per month.

0
ProgrammingHacker News ·

Texas Judge Rules TikTok Deceived Users About Child Safety Feature

A Texas judge has ruled that TikTok misled users regarding one of its child safety features, according to a Reuters report dated September 11, 2026. The ruling centers on claims that TikTok made false or deceptive representations about how the feature functioned to protect younger users. The case is part of broader ongoing legal scrutiny TikTok faces in the United States over its handling of minors on the platform. The decision could have significant implications for TikTok's operations and its obligations to users and regulators going forward.

0
ProgrammingDEV Community ·

Sliding Window Technique Explained: A Key DSA Pattern for Coding Interviews

The sliding window is a high-frequency algorithmic pattern used to solve subarray and substring problems efficiently, distinct from the two-pointer technique. It works by maintaining a moving window over an array or string, updating results incrementally rather than recalculating from scratch each time. Fixed sliding windows maintain a constant size, while variable windows expand and shrink dynamically based on validity conditions. Common interview problems solved with this pattern include longest substring without repeating characters, maximum sum subarray of size k, and minimum window substring. Key mistakes to avoid include recalculating window sums in a loop, forgetting to shrink the window, and using a list instead of a set or dictionary for duplicate checks.

0
ProgrammingDEV Community ·

Two Pointers: A Top-Rated DSA Pattern Every Coding Interviewee Should Master

The Two Pointers technique is one of the highest-frequency patterns in coding interviews, using two indices instead of one to traverse arrays or strings efficiently. Pointers can move toward each other, in the same direction, or at different speeds depending on the problem type. The approach is especially useful for sorted arrays, palindrome checks, removing duplicates, and pair-sum problems, reducing time complexity from O(n²) to O(n). Common pitfalls include applying two pointers on unsorted arrays where original indices matter, or moving the wrong pointer when adjusting a sum. The next related concept, Sliding Window, builds on pointer logic and tackles a distinct class of problems such as longest substrings and minimum window substrings.

0
ProgrammingHacker News ·

SDR-- Launches as Open Source Software-Defined Radio with Rust DSP and Web UI

SDR-- is a newly released open source software-defined radio (SDR) project hosted on GitHub. The tool features a patchable signal graph, allowing users to customize and connect signal processing components modularly. Its digital signal processing (DSP) layer is built using Rust, a language known for performance and memory safety. The project also includes a web-based user interface, making it accessible without requiring a dedicated desktop application. It was shared on Hacker News, where it is currently gathering early community attention.

0
IndiaTimes of India ·

Travis Kelce's $5.35M Ohio estate draws neighbor concerns over privacy fence

NFL star Travis Kelce has reportedly purchased a lakefront property in Bratenahl, Ohio, valued at $5.35 million. The estate spans 3.5 acres and includes eight bedrooms, 11 bathrooms, a theater, fitness center, sauna, guest cottage, and a former speakeasy. Neighbors raised concerns after plans for a privacy fence around the property emerged. Bratenahl Mayor Keith Benjamin responded by affirming that the village welcomes high-profile residents while also respecting their privacy. The property is located near Kelce's childhood home in Ohio.

0
SportsESPNcricinfo ·

Pakistan Fined for Slow Over Rate in Asia Cup Semi-Final vs Sri Lanka

Pakistan players have been fined 5% of their match fee for failing to maintain the required over rate during their Asia Cup semi-final clash against Sri Lanka. The penalty was imposed following an official assessment of the team's bowling pace during the match. Slow over rate violations are a standard offence under ICC regulations, which mandate teams complete their overs within a set time. This financial sanction serves as a reminder to teams to manage their on-field tempo efficiently in high-stakes tournament cricket.

0
IndiaTimes of India ·

Phoenix converts shipping containers into 40 transitional homes for homeless seniors

Phoenix has launched a transitional housing community specifically designed for homeless older adults. The first phase of the project features 40 individual units built from repurposed shipping containers, each equipped with essential amenities and support services. A second phase is already planned, which will add 56 affordable permanent apartments to the development. The initiative aims to provide stable, long-term housing solutions for at-risk senior citizens in the city.

0
IndiaTimes of India ·

Pennsylvania's Iconic 25-Foot Haines Shoe House Restored and Open for Overnight Stays

A giant shoe-shaped house in Pennsylvania, originally built in 1948 by a local entrepreneur as an advertising gimmick, has been restored and reopened to the public. The structure, standing 25 feet tall, initially served as both a promotional attraction and a guest house. Over the decades, the property fell into disrepair before being revived by the founder's granddaughter. She transformed the landmark into a rental property, allowing visitors to book overnight stays. The Haines Shoe House now stands as a quirky historical landmark offering a one-of-a-kind lodging experience.

0
IndiaTimes of India ·

Ohio's 1847 Jail Turned Family Home Lists at $400,000 After Century of Ownership

A historic Ohio jail dating back to 1847 has been transformed into a unique residential property. The Hoffmann family purchased the building in 1924 and initially converted it into apartments before unifying it into a single dwelling roughly 15 years ago. The structure retains its original six jail cells, which now serve as storage spaces and closets. The property is currently on the market with an asking price of $400,000.

0
ProgrammingHacker News ·

Developer Tests ESP32 Microcontroller Uptime in Public Web Experiment

A developer has launched esp32s31.fun, a public experiment hosting a live website served directly from an ESP32 microcontroller. The project aims to test the reliability and longevity of the low-cost embedded device under real-world web traffic. The creator's primary goal is to see how long the ESP32 can run without crashing or requiring a reboot, with a target of at least one week. The experiment was shared on Hacker News, where it attracted modest early attention. It highlights growing hobbyist interest in pushing the limits of inexpensive microcontroller hardware.

0
ProgrammingDEV Community ·

Wrong API endpoint, not a block: how a YouTube scraping error cost three months

A development team spent three months believing YouTube blocked their datacenter IPs after a probe of the internal API returned zero comments, which they mistakenly interpreted as a block. The real cause was a flawed testing method: YouTube's /youtubei/v1/next endpoint never includes comments in its initial watch payload, as comments require a second request using a continuation token. The team's single-step probe consistently returned empty comment data across all IP tiers — direct, datacenter, and residential — making the false negative appear highly credible. An outdated internal note about IP-class blocking on a different endpoint had been incorrectly generalised to cover all YouTube API surfaces, suppressing further investigation. Once the correct two-step process was applied, all three IP tiers successfully returned comment data, revealing no block existed and exposing one of the largest unserved scraping demand clusters the team had encountered.

← NewerPage 1213 of 5378Older →