data Archives

Tech Optimizer

September 1, 2026

Connecting My LangGraph AI Agent to Postgres

A stateful LangGraph agent was developed to streamline a 15-minute booking process, featuring a user-friendly Streamlit UI and a backend powered by a Postgres database. The agent responds to customer queries, calculates service pricing, manages service acceptance, suggests time slots, and confirms appointment details. It operates in two modes: in-memory for rapid testing and Postgres for persistent storage. Testing can be done locally using Docker, which simulates a Postgres environment, or with a hosted Postgres instance. The project includes a docker-compose.yml file to initiate a PostgreSQL 16 container, allowing the application to connect to the database. Data persistence is ensured through Docker volumes, and the application can be run with specific commands after setting up the environment variables. The system has been tested successfully, demonstrating its ability to manage bookings and maintain data integrity across sessions. Future enhancements are planned to improve the booking workflow and integrate additional communication channels.

Tech Optimizer

September 1, 2026

Autoscaling Lakebase Postgres

Choosing a database instance size without prior knowledge of the workload can lead to inefficiencies and excessive compute usage. Lakebase Postgres addresses this with an autoscaling feature that eliminates manual sizing, utilizing in-place VM resizing and a monitoring algorithm for CPU, memory, and working set size. Lakebase Postgres separates compute and storage layers, allowing independent resizing of compute nodes without affecting the database. The autoscaling algorithm relies on three signals: CPU load (cpuGoalCU), memory use (memGoalCU), and compute-cache working set size (lfcGoalCU). The CPU load is monitored every five seconds, aiming to maintain it at or below 90% capacity. Memory usage is tracked at two frequencies: overall memory every five seconds and Postgres-specific memory every 100 milliseconds, with a goal to keep usage below 75% of allocated RAM. The compute cache evaluates active data access efficiency, adjusting size based on workload. The working set is estimated using a modified HyperLogLog algorithm that records timestamps for page accesses, allowing for distinct page estimates over various time frames. The algorithm projects future working-set growth to allocate sufficient cache while capping it at 75% of RAM. Resizing the compute involves four components: the autoscaler-agent, vm-monitor, Kubernetes scheduler, and NeonVM. Scaling up occurs when any of the three goals indicate a need for more resources, while scaling down includes verification to ensure sufficient memory remains for operations. Timely adjustments in both directions are prioritized to minimize costs.

AppWizard

September 1, 2026

Blizzard doing ‘a thorough scrub’ of illegitimate World of Warcraft Mythic-Plus dungeon rankings, with more changes to come

Blizzard Entertainment is reviewing World of Warcraft Mythic Plus Dungeon rankings due to concerns over players purchasing carries, following the introduction of rewards for the top 1% during the Midnight expansion. Game director Ion Hazzikostas confirmed that the team is thoroughly examining this issue and will provide updates soon. The competitive rankings have led to discussions about the rapid increase in cutoff scores and the prevalence of paid invitations for +21 level groups. Players have faced penalties for obtaining Mythic raiding mounts through real-money transactions, causing confusion over legitimate practices. The percentage-based ranking system has increased participation in Mythic Plus dungeons but resulted in lower retention rates compared to the previous season. Community feedback on the new rewards has been mixed, with some players feeling stressed by the uncertainty of the cutoff. Class balance has also become a concern, as successful teams tend to favor specific "meta" specs, potentially limiting accessibility for other players. Blizzard aims to keep dungeons accessible for all classes while considering specialization-specific cutoffs for future seasons.

AppWizard

September 1, 2026

Android 17 QPR2 Beta 4 is shaping up to be Google’s best beta yet

Android 17 QPR2 has reached Platform Stability with the release of Beta 4, locking the application programming interfaces (APIs) and allowing developers to refine their apps. The update focuses on system polish and bug fixes rather than new features. Google has addressed issues affecting Pixel users, including overheating, unexpected reboots, gesture navigation glitches, battery charging limitations, Recents screen problems, Bluetooth audio inconsistencies, and screen-recording complications. Hardware support enhancements include fixes for USB-C XR mirroring, compatibility with 3D smart-glasses displays, and improvements to low-light Face Unlock functionality. The beta journey began on July 20, with Beta 1, followed by Beta 2 on August 3 and Beta 3 shortly after. Beta 4 includes critical bug fixes such as resolving thermal management issues, battery charging behavior, gesture navigation refinements, and fixes for the transparent status bar during full-screen video playback. Other improvements address app drawer search issues, Bluetooth audio routing, Recents screen freezing, and screen-recording audio bugs. Beta 4 reinstates screen mirroring for USB-C XR glasses and resolves issues with 3D mode for smart glasses. Feedback from early testers has been positive, with reports of reduced lag and improved performance. However, some users have noted oversized text and lower display resolution issues, which can be resolved by rebooting. A persistent Bluetooth routing issue for incoming calls has been reported across all QPR2 betas. The update is being rolled out to various Pixel phones and tablets, with a download size of approximately 671MB on the Pixel 9 Pro XL. Existing Pixel owners in the beta program will receive the update over the air, but exiting the program after installation may result in data loss.

Winsage

September 1, 2026

Windows bug incorrectly tells users that Microsoft Defender Antivirus is turned off

Microsoft Defender's reliability is under scrutiny due to a recent security alert that affects a wide range of Windows versions, including both Windows 11 26H1 and Windows Server 2012. Insurers will require more than verbal assurances about software performance in six months, necessitating the archiving of telemetry data, including sensor check-ins and Defender versions, by Chief Information Security Officers (CISOs). The alert's impact is significant, as a single flaw in Defender can affect various systems categorized into different patch rings, highlighting the need for vigilant monitoring and proactive management of security protocols.

Tech Optimizer

August 31, 2026

Fake Chrome update scam could infect your computer

A fake Chrome update scam has emerged, linked to a Chrome extension called Enable Right Click & Copy - Smart Unlock + OCR, which was initially legitimate but later compromised. The extension had around 70,000 users before being removed from the Chrome Web Store on August 14 due to its malicious nature. Users may encounter deceptive warnings while browsing benign sites, urging them to download files instead of using Chrome's built-in update mechanism. Google advises against engaging with suspicious pop-ups requesting software installations. The scam highlights that trusted extensions can become threats without warning, and users should regularly review their installed extensions and check for updates directly within Chrome. Similar fake update alerts have also been reported in other Chromium-based browsers. Users are encouraged to adopt safety measures, such as using strong antivirus software, reviewing browser extensions, and being cautious with downloaded files. If a suspicious file has been executed, users should treat their computer as potentially compromised and take appropriate security actions.

AppWizard

August 31, 2026

This fan-favorite image editor is the first app to support Android’s new location data controls

Snapseed has integrated the new location metadata API within Android’s Photo Picker, allowing users to manage image location data. In version 4.1.5.970833206, users receive a prompt when selecting an image to edit, asking if they want to include location information. A toggle in the Photo Picker interface enables users to quickly enable or disable location data sharing. This feature allows users to retain or eliminate location data for selected images, enhancing privacy control.

AppWizard

August 31, 2026

Home Ministry alerts about rise in financial frauds through malicious Android apps

The Indian Cyber Crime Coordination Centre (I4C) has reported a rise in financial frauds associated with malicious Android applications disguised as pornography apps. These apps, including names like "Night Play," "Reloop," and "Kyss," are promoted through ads on Facebook and Instagram, leading users to phishing websites where they are encouraged to download APK files from unverified sources. The malicious apps exploit permissions granted by users to take control of devices, potentially facilitating unauthorized financial transactions. Recommendations for safety include only installing apps from reputable sources, avoiding suspicious downloads, and regularly monitoring financial transactions. Instructions for uninstalling these apps involve starting the phone in Safe Mode, uninstalling the suspicious app, and then restarting the device.

AppWizard

August 31, 2026

This feature keeps distracting spam calls away while using Android Auto

Google's Call Screen feature allows users to manage unknown calls by delegating the initial interaction to Call Assist, which identifies the caller and provides context. This feature is now integrated with Android Auto, although the screening process itself remains a function of the phone. Call Screen operates in two modes: manual, where users can choose to screen calls, and automatic, which silently screens certain unknown calls and hangs up on spam. Call Screen works directly on the device without needing Wi-Fi or mobile data, and call audio and transcripts are not stored in the user's Google Account. To set up Call Screen, users must do so through the Phone by Google app. Compatibility with Android Auto and Call Screen varies by phone model and geographical location, with automatic screening primarily available on Pixel phones in the U.S. Manual screening is accessible in several countries, and some selected Android devices may also support it. Not all call screening features are the same across different brands, and practical limitations exist for automatic Call Screen, such as functionality issues when connected via Bluetooth or while roaming.

AppWizard

August 31, 2026

The AI memory crunch has reached the apps on your phone

Google will implement new memory usage regulations for Android applications starting in February 2027, due to a global RAM shortage. Apps exceeding the set memory limits may be throttled, terminated, or face reduced visibility on the Play Store. The memory thresholds vary based on device specifications, with specific limits for foreground, background, and bitmap memory usage. Non-compliance will result in penalties affecting app distribution and visibility. The memory crisis is attributed to increased demand from the AI data center industry, leading to rising RAM costs. The new limits will first apply to Pixel devices with Android 17, and other manufacturers are expected to follow. Additionally, by April 2027, all apps on the Play Store must support zero-tap credential restoration for users transitioning to new devices.