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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.
Autoscaling Lakebase Postgres
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.
Windows may finally take no for an answer, adding a permanent opt-out for OneDrive backup nags
Winsage
August 31, 2026

Windows may finally take no for an answer, adding a permanent opt-out for OneDrive backup nags

Microsoft has introduced a new feature in Windows 11 that allows users to permanently opt out of prompts encouraging them to back up files with OneDrive. The updated full-screen backup prompt now includes an "Opt out of backup" button, which was observed on PCs running stable Windows 11 25H2 builds without the OneDrive sync client installed. This option enables users to indicate their preference against OneDrive integration without uninstalling OneDrive or affecting existing files and synchronization settings. The feature aims to eliminate intrusive backup notifications that previously required users to either continue with OneDrive backup or postpone the prompt. Although the option appeared on at least one system in 2025, it is now being rolled out to a broader range of stable installations. The August 27 update notes from Microsoft do not mention this new opt-out button, suggesting it may be rolling out independently.
Fake dating apps are being used to target Android users: How the new cyber scam works
AppWizard
August 31, 2026

Fake dating apps are being used to target Android users: How the new cyber scam works

India's cybercrime authorities have warned about the misuse of dating and adult-themed advertisements on social media platforms like Instagram and Facebook, which are being exploited by criminals to distribute malicious Android applications. These ads redirect users to external websites where they are prompted to download APK files, bypassing security measures of trusted app stores. The Indian Cybercrime Coordination Centre (I4C) has identified several malicious applications, including Night Play, Reloop, Kyss, Vimo, Rivo, Nexo, and Vixa, and cautions against installing unfamiliar applications promoted through unsolicited ads. These apps may request sensitive permissions, such as access to SMS messages, contacts, photos, device storage, and Accessibility Services, which can allow fraudsters to access valuable information. Compromised devices can lead to financial fraud by intercepting OTPs and other verification details. The I4C recommends using trusted app stores, keeping Google Play Protect active, reviewing app permissions, and being cautious with social media ads. If a suspicious app is installed, users should restart their phone in Safe Mode to uninstall it, disable its permissions if necessary, and consider a factory reset if removal fails. Users who suspect fraud are encouraged to report incidents promptly.
Site provides instructions to get up to $175 back for your pre-installed Windows 11 license — new portal provides legal forms, but warns buyers not to wipe storage first
Winsage
August 29, 2026

Site provides instructions to get up to $175 back for your pre-installed Windows 11 license — new portal provides legal forms, but warns buyers not to wipe storage first

A significant portion of new PCs is sold with Windows 11 pre-installed, causing frustration among Linux enthusiasts. The Refund4Freedom initiative, launched by the Italian Linux Society and the Free Software Foundation Europe, aims to provide consumers with the option to purchase laptops without being tied to a specific operating system and to avoid paying for unwanted software. The initiative has three main demands: 1. Freedom of Choice: Consumers should not be forced to use or pay for pre-installed software. 2. Transparent Pricing: Consumers should be able to purchase hardware without pre-installed software and see price differences. 3. Clear Refund Processes: Manufacturers must provide clear guidelines for requesting refunds for pre-installed software. The Refund4Freedom website details various brands' reimbursement practices, noting that Acer and Lenovo have established refund processes for Windows, while Asus has a less visible route primarily in Italy. Dell and HP currently do not offer reimbursement options. For those wishing to reject Windows, Refund4Freedom advises documenting contract clauses, contacting customer service, and using a pre-made form for refunds, which is tailored for Italy. The typical reimbursement amount for a Windows license is around €50, though it varies by region and manufacturer.
I test Windows laptops for a living, and these are the 7 features I can't pass up
Winsage
August 29, 2026

I test Windows laptops for a living, and these are the 7 features I can’t pass up

The author has spent five years testing laptops and has identified seven essential features for selecting a Windows laptop based on their experience and travel needs: 1. An OLED display for better contrast and deeper blacks. 2. A 14-inch chassis that is lightweight, ideal for travel. 3. At least 512GB of storage to accommodate large files. 4. At least one USB-A port for compatibility with older hardware. 5. All-day battery life, enhanced by Intel's "Lunar Lake" processors. 6. A backlit keyboard for usability in low-light environments. 7. No proprietary chargers, favoring USB-C for flexibility and convenience. The author notes that while many brands offer these features, pricing has been affected by the ongoing memory crisis, pushing preferred models into a higher price range.
Overcoming the Barriers of Commercial DBs with Open Source and AI… EDB Hosts 'PostgreSQL AI Summit'
Tech Optimizer
August 29, 2026

Overcoming the Barriers of Commercial DBs with Open Source and AI… EDB Hosts ‘PostgreSQL AI Summit’

A company's approach to artificial intelligence (AI) begins with determining the optimal structure for data storage and management, often facing challenges such as high costs of commercial databases and reliance on specific enterprise technologies. To effectively utilize AI, companies need to establish new infrastructures, including vector search capabilities, Search Augmentation Generative (RAG) systems, and data lakehouses. EDB is notable for connecting companies and technology partners that have transitioned to open-source databases. On September 3, EDB will host the 'EDB Postgres AI Summit Seoul 2026' at the Sofitel Ambassador Seoul, starting at 10:00 AM. This event is the largest PostgreSQL conference in Korea, themed 'Change the Game,' focusing on the shift from commercial databases to open-source and AI-driven frameworks, featuring real-world case studies. Approximately 300 C-level executives and IT decision-makers from various sectors are expected to attend, with participation by invitation only. The summit will include 15 sessions with customer case studies and technical presentations. Notable discussions will include IBK Industrial Bank of Korea's migration of 15 core systems to PostgreSQL, a semiconductor company's diversification of MPP databases on a DBaaS platform, and Kyobo Book Centre's database modernization strategy. Shopcast will present its development of an 'Agentic Lakehouse' integrating AI technology with a data lakehouse framework. The keynote address will be given by Kim Deok-joong, discussing organizational management strategies for integrating AI agents. The technical sessions will cover the architecture of the 'EDB Postgres AI' platform, which supports AI vector search and RAG, with live demonstrations of the analytics engine ClickHouse and LakeHouse technology for analyzing petabyte-scale data. EDB's domestic distributors and international partners will participate as sponsors. The summit aims to showcase technologies and case studies from the domestic ecosystem, addressing PostgreSQL adoption, system migration, operations, data analysis, and AI implementation. EDB manages transaction, analytics, and AI workloads using Postgres in cloud environments, serving over 1,500 global customers. Herve Timsit, EDB's Chief Revenue Officer, emphasized the event's focus on sharing tangible results and addressing the challenges of commercial databases while investing in AI infrastructure.
Databricks Unveils Lakebase Postgres
Tech Optimizer
August 29, 2026

Databricks Unveils Lakebase Postgres

Lakebase Postgres features a two-layer architecture that separates operations for durability and scalability. The compute layer uses standard Postgres for SQL parsing, query planning, and execution, designed to be ephemeral for dynamic scaling. The storage layer ensures correctness, durability, and historical accuracy, consisting of three components: Safekeepers replicate Write-Ahead Logging (WAL) records using a quorum-based protocol; Pageserver transforms WAL records into page versions; and Object Storage retains materialized versions and historical states in an immutable format. This architecture enhances data durability and system scalability.
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