cache Archives

Winsage

June 20, 2025

How Uniphore achieved 30% cost savings by modernizing Windows servers on AWS

Uniphore is an AI innovation company that faced challenges with its legacy Windows Server infrastructure, which was costly and raised security concerns due to its end-of-support status. To modernize, Uniphore utilized Amazon Web Services (AWS) for containerization and cloud-native solutions, achieving a 30% reduction in costs and improved operational capabilities. The migration involved transitioning from 50 bare-metal Windows Server 2008 R2 instances to a Linux environment on AWS, optimizing call-center analytics workloads and enabling better training of large language models. The modernization strategy included three key areas: application modernization through refactoring and containerization, a custom data migration solution using Type 2 hypervisor technology, and a cloud infrastructure setup with Amazon EC2, Amazon EKS, Amazon EFS, and Amazon S3. The migration was executed in three phases: deploying the hypervisor and DataSync agent, secure data migration and validation, and production cutover with application deployment. Best practices adopted during the process included Infrastructure as Code (IaC) with Terraform, CI/CD pipelines using GitLab, comprehensive monitoring with DATADOG and CloudWatch, and enforcement of AWS Backup policies. The modernization resulted in benefits such as improved scalability and performance, flexibility and portability of applications, enhanced security and compliance, efficient data management, reduced operational overhead, and significant cost savings.

Winsage

June 6, 2025

This $200 Windows PC fits in the palm of my hand – and powers three 4K displays

The Minix Neo Z97 mini PC is priced at 9 on Amazon and features Windows 11 pre-installed. It has a compact size of 88×88×42mm and weighs 0.18kg. The specifications include an Intel® Processor N97 (up to 3.6 GHz), Intel® UHD Graphics, 12GB LPDDR5X-4800MHz memory, and a 512GB M.2 2280 PCIe 3.0 x 4 NVMe SSD. It supports a triple monitor setup and offers connectivity options such as dual-band Wi-Fi 6 and Bluetooth 5.2. The device operates quietly, making it suitable for noise-sensitive environments. While it performs well for everyday tasks, it shows strain with resource-intensive applications.

AppWizard

June 2, 2025

8 Free Open Source Android Apps: Hidden Gems for a Better Phone

Enoch Boateng highlights eight standout open source Android apps that prioritize privacy, transparency, and functionality: 1. Mindful: A journaling app for mental well-being that supports text, voice, or photo entries, includes gratitude journaling, guided meditations, mood tracking, and security features like pin locks. 2. YTDL: A media downloader for videos and audio from over 1,000 websites, featuring batch downloads, metadata embedding, and privacy options like incognito mode. 3. ML Manager: An APK management app that allows extraction, backup, and sharing of apps, with batch extraction and integration with APK Mirror. 4. Loop Habit Tracker: A habit-building app with a forgiving scoring system, progress graphs, offline functionality, and an ad-free experience. 5. Shop Sync: A task management app for shopping lists with cloud syncing, offline access, and CSV export capabilities. 6. Snapsafe: A privacy-focused camera app that removes metadata, blurs faces, and offers customizable location tagging. 7. Booming Music: An offline music player with gapless playback, lyrics syncing, equalizer presets, and Android Auto compatibility. 8. Image Craft: An image editing toolkit that compresses, resizes, and converts images, offers batch operations, and creates password-protected archives.

Tech Optimizer

June 1, 2025

Supercharging vector search performance and relevance with pgvector 0.8.0 on Amazon Aurora PostgreSQL

The Amazon Aurora PostgreSQL-Compatible Edition has integrated support for pgvector 0.8.0, enhancing vector search capabilities significantly. This version achieves up to 9x faster query processing and delivers 100x more relevant search results compared to previous iterations. Key improvements in pgvector 0.8.0 include: - Up to 5.7x improvement in query performance for specific patterns. - Introduction of the iterative_scan feature, enhancing recall for filter queries requiring approximate nearest neighbor (ANN) index searches. - Improved cost estimation for more efficient query planning, allowing the selection of traditional indexes for complex filtered searches. - Flexible performance tuning with two modes for iterative_scan: relaxed_order and strict_order. Previous versions faced challenges with overfiltering, where combining vector similarity search with traditional SQL filters resulted in fewer results than expected. The HNSW indexing algorithm accelerates vector similarity searches by creating a multi-layered graph structure for efficient navigation. Iterative index scans in pgvector 0.8.0 improve query reliability and performance by applying filters during the scanning process, reducing false negatives and enhancing performance. The configuration options for iterative scanning include off, strict_order, and relaxed_order, with relaxed_order providing the best balance between performance and accuracy. In performance tests, pgvector 0.8.0 demonstrated substantial improvements across various query patterns, with significant enhancements in result completeness and recall. The database can now efficiently handle enterprise-scale applications, such as e-commerce and recommendation systems, with high performance and result quality even as product catalogs expand. Best practices for deploying pgvector 0.8.0 include using HNSW with recommended parameters, creating additional indexes on commonly filtered metadata columns, and tuning query parameters based on specific use cases. Operational best practices involve using Graviton4-based instances for optimal performance, monitoring and tuning slow vector queries, and considering partitioning for very large tables.

AppWizard

May 30, 2025

Tiny Tina’s Wonderlands is free on Epic Games Store

Epic Games and Gearbox are offering a free copy of Tiny Tina’s Wonderlands for PC gamers until June 5th. Players can claim the game from the Epic Games Store, and it will remain in their library permanently. The game features a vibrant world, a multiclass system with six character skill trees, and supports solo or multiplayer modes. It performs well on various PC configurations, though higher resolutions require a robust GPU. Gearbox has removed the Denuvo anti-tamper technology from the game.

Winsage

May 28, 2025

The Windows File Explorer is still so bad when it comes to networked drives

File Explorer in Windows 11 has usability issues, particularly with sluggish search functionality and problems accessing networked drives. Users often experience drives disappearing after reboot, inaccessibility to files, and freezing of File Explorer, with error codes like c0000375 indicating deeper issues. The networked drive feature relies on outdated technology, as Microsoft has deprecated older protocols like SMBv1, complicating file sharing. Users can mitigate freezing by restarting File Explorer and ensuring network settings are correctly configured, such as setting Wi-Fi to private and enabling file sharing options. Excessive pinned items in Quick Access can cause crashes, and clearing the cache may resolve these issues. Alternatives to File Explorer, like XYplorer and File Pilot, can provide better access to networked drives. Overall, the challenges stem from outdated technology and the corruption of the Quick Access cache, with third-party solutions available for relief.

Tech Optimizer

May 21, 2025

Achieve up to 1.7 times higher write throughput and 1.38 times better price performance with Amazon Aurora PostgreSQL on AWS Graviton4-based R8g instances

Upgrading to Graviton4-based R8g instances with Aurora PostgreSQL-Compatible 17.4 in an Aurora I/O-Optimized cluster configuration results in significant performance improvements. The new instances provide up to 1.7 times higher write throughput, 1.38 times better price-performance, and reduce commit latency by up to 46% on r8g.16xlarge instances and 38% on r8g.2xlarge instances compared to Graviton2-based R6g instances. The Amazon Aurora PostgreSQL-Compatible Edition now supports AWS Graviton4-based R8g instances and PostgreSQL 17.4, which introduces performance enhancements for I/O-Optimized configurations, optimizing write operations and batch processing. R8g instances offer up to 192 vCPUs and 1.5 TB of memory, supporting larger configurations and providing up to 50 Gbps of network bandwidth. PostgreSQL 17 includes vacuum improvements, eliminates the need to drop logical replication slots during upgrades, and expands SQL/JSON standards. Aurora PostgreSQL-Compatible separates compute from storage, enabling independent scaling and maintaining six-way replication for durability, while processing changes as log records to reduce I/O operations. Performance benchmarks using HammerDB show improvements in throughput and commit latency across various workloads. For small workloads on 2xlarge instance size, throughput increased by 50.25% and commit latency improved by 33.87%. For medium workloads on 16xlarge instance size, throughput increased by 30% and commit latency improved by 17.44%. The most significant performance benefits arise from combining hardware upgrades from Graviton2 to Graviton4 with database engine upgrades from PostgreSQL 15.10 to 17.4. For small workloads, throughput increased by 70% and commit latency improved by 38.71%. For medium workloads, throughput increased by 70% and commit latency improved by 46.67%. Cost efficiency is also enhanced, with a 38% improvement in price performance and a 61.26% improvement in price-performance ratio when comparing Graviton2 and Graviton4 instances. Reserved Instances for Graviton4-based R8g instances offer additional cost-optimization opportunities.

AppWizard

May 19, 2025

NVIDIA DLSS 4 Multi Frame Generation and Other RTX Updates Shown Off for Upcoming and Existing PC Games

NVIDIA's DLSS 4 technology is integrated into over 125 games and applications. Portal with RTX has upgraded from DLSS 3.5 to DLSS 4, improving performance with the GeForce RTX 5090 achieving an average of 277 frames per second. Roadcraft will launch with DLSS Frame Generation, DLSS Super Resolution, and DLSS 4 with Multi Frame Generation, running at over 250 frames per second on the RTX 5090. SplitGate 2 will fully integrate DLSS 4 technologies in its Open Beta, while NARAKA: Bladepoint will receive a path tracing update, showcasing approximately 350 frames per second. F1 25 will launch on May 24 with DLSS 4 technologies, and Dune: Awakening will feature these technologies in early June. MindsEye will launch on June 10 with full DLSS 4 support, followed by Remedy's FBC: Firebreak on June 17. Wuchang: Fallen Feathers will launch on July 24 with complete DLSS technologies but without ray tracing. inZOI will receive a DLSS 4 update in August. Horizon 'clone' Light of Motiram runs at over 400 frames per second with DLSS 4 technologies. Crimson Desert will incorporate DLSS 4 technologies and ray-traced effects, aiming for high-quality graphics and smooth gameplay.

Tech Optimizer

May 19, 2025

How to catch and optimize problematic queries in PostgreSQL

Performance issues in PostgreSQL can arise as databases grow, leading to declines in query performance. To identify problematic queries, one can log long-running queries by setting the `log_min_duration_statement` parameter in the `postgresql.conf` file. The `pg_stat_statements` module can be enabled to monitor execution statistics of SQL statements, providing insights into query performance, including execution time and the number of calls. Queries with high standard deviation in execution time may indicate inconsistency, while sorting query statistics by total execution time can reveal excessive load from multiple fast queries. Real-time monitoring can be done using the `pg_stat_activity` view to check active queries and their states, and the `pg_locks` view can help identify blocked processes. The `EXPLAIN` command can analyze query execution plans, and using the `auto_explain` module can log plans for slow queries. Understanding cost parameters in query plans helps in optimizing performance, and different join methods (Nested Loop, Merge Join, Hash Join) have varying complexities and costs. To influence the planner's choice of scanning methods, configuration parameters can be adjusted, such as disabling sequential scanning. Extensions like `sr_plan`, `pg_hint_plan`, and `AQO` can further optimize query execution. Monitoring query progress can be done using dynamic views like `pg_stat_progress_*` for various commands.

AppWizard

May 18, 2025

How to manage Facebook app cache on Android

To manage the cache of your Facebook app, navigate to your device's settings menu, find the "Apps" or "Application Manager" section, select the Facebook app, and clear the cache to enhance performance and free up storage space.