SOFTWARE TESTING Archives

Tech Optimizer

August 5, 2025

Building a job search engine with PostgreSQL’s advanced search features

Job search platforms connect employers and candidates through advanced search engines that analyze structured and unstructured data. These platforms require robust database technologies for executing complex queries, full-text and semantic searches, and geospatial functionalities. A modern job search engine consists of a data repository that stores job listings and candidate profiles, and a search engine that facilitates bidirectional searches. Key features of an effective job search engine include: - **Full-text search**: Provides lexical matching for job titles and skills, supporting exact phrase matching and typo-tolerant searches. - **Semantic search**: Uses vector-based similarity to understand context and relationships beyond literal terms. - **Geospatial search**: Incorporates geographic considerations to find opportunities within specific distances. PostgreSQL serves as both a data repository and search engine, supporting full-text search, semantic search via the pgvector extension, and geospatial queries using the PostGIS extension. The job search engine utilizes PostgreSQL to manage job listings and candidate profiles, enabling real-time searches across millions of entries. The data model for a job search engine includes tables for jobs and resumes, with columns for full-text search vectors, semantic vectors, and geographical locations. PostgreSQL's full-text search capabilities include tokenization, dictionaries for language-aware parsing, and ranking functions for relevance. Advanced features such as proximity search, simple and weighted ranking, and fuzzy matching enhance search accuracy. Vector embeddings represent text in high-dimensional space, allowing for semantic searches that recognize similar roles or skills. PostgreSQL supports vector similarity searches with specialized indexing methods like IVFFlat and HNSW for efficient querying. Geospatial search capabilities in PostgreSQL enable location-aware job searches, allowing candidates to find jobs within commuting distances. Combining different search techniques, such as full-text and semantic searches, provides more relevant results. Performance optimization features in PostgreSQL address challenges related to computational complexity, indexing overhead, and concurrent query loads. The architecture discussed is applicable to various applications beyond job search platforms, including e-commerce, real estate, content recommendation systems, travel, and healthcare provider matching.

Winsage

July 26, 2025

Windows Sandbox is one of the most underrated Windows 11 tools — here’s how I use it

Windows Sandbox is an optional feature available exclusively in the Pro editions of Windows 11 and above, allowing users to create a secure virtual environment for testing software without risks. It can be set up by searching for "Turn Windows features on or off" in the Start menu, checking the box for Windows Sandbox, and restarting the computer. The sandbox operates with the same version of Windows as the host and does not maintain its state, meaning changes made within it do not persist after closing. It provides a clean, isolated environment for testing applications, conserving storage space and preventing background tasks from affecting system performance. While it allows safe testing of potentially risky software, it is not a substitute for traditional virtual machines, which are necessary for testing different operating systems or making OS changes.

Winsage

June 28, 2025

7 quick things I did that instantly sped up my Windows PC

Transitioning from Windows to macOS can create nostalgia for the Windows interface, but many professionals still need access to Windows for work. Older machines may hinder performance, but improvements can be made without new hardware. To enhance the performance of an aging Windows PC: 1. Restart the system regularly to clear memory leaks and unresponsive processes. 2. Turn off visual effects to improve responsiveness, especially on older machines. 3. Delete unnecessary files and applications to free up storage space. 4. Uninstall third-party antivirus software in favor of Microsoft Defender, which is resource-efficient. 5. Disable unnecessary startup programs to enhance boot times and system responsiveness. 6. Close multiple browser windows and tabs to conserve RAM. 7. Regularly update the Windows operating system for speed and stability improvements.

Winsage

April 11, 2025

Copilot Recall: Microsoft rolls out AI screenshot tool

Microsoft has rolled out its AI-driven tool, Copilot+ Recall, which captures snapshots of users' screens at regular intervals. Currently in preview mode, it is available to select users of Microsoft's AI-enabled PCs and laptops, following a temporary halt in 2024 for refinement. Access is being expanded to participants in the Windows Insider program, with global availability planned, though users in the EU will experience a delay until late 2025. Recall allows users to search through past activities, and they can opt-in to the feature, pausing snapshot saving at any time. Privacy advocates have raised concerns about potential misuse, as the tool can save images from emails and messaging apps, including private messages. Microsoft asserts that snapshots are not shared with the company or third parties and are stored locally on users' devices. Users can choose which applications can use Recall, and private browsing modes will not be subject to snapshotting. The UK's Information Commissioner's Office is engaging with Microsoft to ensure compliance with data protection laws.

AppWizard

March 28, 2025

Download MSI App Player (free) for Windows

MSI App Player is a versatile tool for users seeking gaming and productivity enhancements on a larger screen. It features a user-friendly interface for setting up a virtual Android environment on Windows without requiring advanced technical skills. The app allows keyboard and mouse mapping to emulate touchscreen controls and supports console pad connectivity in Console Mode. Users can open multiple windows for different applications and launch the same game with different accounts. It is integrated with the Windows operating system for mobile software testing and can handle high-end graphics and fast-paced mobile games. MSI App Player optimizes CPU, GPU, and memory usage, ensuring smooth performance even on less advanced hardware. It includes an error-checking mechanism and a built-in recovery system to prevent gameplay disruptions, with regular updates for compatibility with the latest Android games and applications.

Winsage

March 25, 2025

5 Windows tools and apps you can’t find on other operating systems

Certain features remain exclusive to the Windows operating system, offering unique functionalities not available on Mac or Linux. Microsoft has developed tools like PowerToys, which includes nearly 20 utilities enhancing Windows functionality, and Windows Sandbox, providing a secure environment for testing applications. Windows Notepad serves as a basic note-taking and coding app with features like spellcheck and autocorrect. The Snipping Tool allows users to capture screenshots and extract text from images, while the Windows Subsystem for Linux (WSL) enables seamless access to both Windows and Linux environments. These tools are designed to enhance productivity and provide significant advantages for Windows users.

Winsage

March 20, 2025

Price drop alert: Get Windows 11 Pro for life for just £11.51

Microsoft has released a significant update for Windows 11 Pro in 2024, featuring enhancements in Copilot AI, platform speed, and phone integrations. Currently, a lifetime license for Windows 11 Pro is available for £11.51, reduced from £153.03, representing a 92% discount, and allows installation on two PCs. The update includes a modern design and a fully integrated Copilot, an AI assistant based on GPT-4, which can answer queries and assist with tasks. Windows 11 Pro offers unique features such as BitLocker device encryption, remote desktop access, Azure AD for secure management, and Hyper-V for running virtual machines.

Winsage

December 8, 2024

Last chance for Cyber Day savings on Windows 11 Pro, now less than $20

Windows 11 Pro is available for .97 (regular price 9) during a Cyber Week sale that ends on December 8 at 11:59 p.m. PT. The operating system includes features such as a new interface, advanced security options like biometric login and TPM 2.0, tools for device management, and enhancements for gaming with DirectX 12 Ultimate. It comes with a lifetime license, meaning no ongoing subscription fees.

Winsage

December 5, 2024

Understand the limitations of running Hyper-V in Windows 11

Organizations can use Hyper-V on Windows 11 to leverage virtualization for local desktops, assisting both end users and IT administrators. Hyper-V is included in Windows 11 Pro and Enterprise editions but is not enabled by default. To activate it, users must access the Control Panel and enable the Hyper-V feature, followed by a system restart. Hyper-V requires processors that support second-level address translation (SLAT) and a minimum of 4 GB of RAM. Limitations of Hyper-V on Windows 11 include the absence of VM clustering, replication, migration, single-root I/O virtualization, and RemoteFX support. Each VM typically requires around 4 GB of memory and at least one CPU core, which can restrict the number of VMs that can be effectively run on endpoint systems with limited resources. Performance can also be affected by various hardware and system architecture factors. To overcome these limitations, users should regularly update Windows 11, system BIOS, and drivers. For those needing more robust virtualization capabilities, transitioning to Windows Server or exploring alternative virtualization platforms may be beneficial.

Winsage

November 22, 2024

5 cool things to do with virtual machines on Windows 11

Windows 11 simplifies the setup of virtual machines (VMs) using Hyper-V or Oracle's VirtualBox, allowing users to quickly establish VMs for various purposes. Users can run legacy applications and games that struggle on modern systems by utilizing older operating systems like Windows XP or Windows 7, or using DOSBox for very old games. VMs enable users to operate multiple operating systems simultaneously, catering to different needs such as programming or graphic design. They can also help maintain privacy against workplace monitoring by isolating personal activities from employer-mandated tracking software. Additionally, VMs allow users to safely explore potentially harmful software for cybersecurity purposes, although caution is advised due to the risk of sophisticated malware escaping the VM. Backing up an entire operating system within a VM is straightforward, involving the management of files like virtual disk images and configuration files, but users should be aware of legal considerations regarding sharing or duplicating VMs.