durability Archives

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.

Tech Optimizer

May 20, 2025

Running I/O intensive workloads on PostgreSQL with Amazon EBS io2 Block Express

Databases are essential for organizations, and their performance is critical to user experience and operational efficiency. AWS introduced Amazon Elastic Block Store (Amazon EBS) io2 Block Express in December 2020 to address performance issues related to storage latency during database operations. This solution enhances storage management for high-performance database servers, supporting up to 256,000 IOPS and 4,000 MiB/s throughput per volume, with a maximum volume size of 64 TiB and sub-millisecond disk I/O latency. A performance comparison was conducted between PostgreSQL databases on Amazon EBS gp3 and io2 Block Express, utilizing the HammerDB benchmarking tool. The analysis involved four tests: OLTP Load test, OLTP Stress test, OLAP Load test, and OLAP Stress test, using r5b.24xlarge EC2 instances. Results indicated that io2 Block Express outperformed gp3 by 2.08 times in transactions per minute (TPM) and provided significantly lower latency for both OLTP and OLAP workloads. Key differences between gp3 and io2 Block Express include durability, with io2 offering 99.999% durability compared to gp3's 99.8% – 99.9%. The maximum IOPS for gp3 is 16,000, while io2 supports up to 64,000 IOPS. Pricing for gp3 is approximately ,375.36/month, while io2 Block Express costs around ,408/month, reflecting its premium performance capabilities. In benchmarking tests, io2 Block Express demonstrated superior performance, achieving 3.95 times faster average performance than gp3 across all scenarios. It is particularly suitable for mission-critical applications requiring consistent sub-millisecond latency and high durability.

AppWizard

May 17, 2025

Android 16 is Google getting serious about foldables

Google recently launched Android 16, featuring significant user interface modifications and new animations, which have elicited mixed reactions from users. The update includes enhancements like improved network connectivity and security against malicious applications. The UI now dynamically adapts to user interactions, adding visual flair. During the Android Show, Google showcased various Android phones, with speculation about future tablet announcements at the I/O conference. The foldable phone market is currently dominated by Android devices, with expectations that foldables could become mainstream, despite challenges related to pricing and durability. Manufacturers are improving foldable designs to enhance resilience. As costs stabilize, foldables may replace traditional devices, offering multifunctional capabilities.

AppWizard

May 14, 2025

How to Find Trident in Minecraft | Esports News – The Times of India

Tridents in Minecraft are powerful weapons that can be used for both melee and ranged combat. They cannot be crafted and are obtained by defeating Drowned mobs, which are hostile underwater zombies. Drowned can be found in rivers, ocean biomes, underwater ruins, and swamp biomes at night (Java Edition). The chance of obtaining a Trident from a Drowned is low, but players can increase their drop rates by using a sword with the Looting enchantment, targeting Drowned that are holding a Trident, or creating a Drowned farm. Once acquired, Tridents can be repaired and enchanted with Loyalty, Channeling, Riptide, and Impaling. Only Drowned holding a Trident will drop one, and using Looting increases the likelihood of obtaining it.

Winsage

May 12, 2025

I tried Asus ZenBook A14. Now I can’t imagine using a different Windows laptop

The Asus ZenBook A14 is a lightweight laptop that weighs over 23% less than the MacBook Air and is crafted from a material called Ceraluminum, making it 30% lighter than aluminum and nearly three times stronger. It features a variety of ports, including two USB-C (v4.0) ports, a USB-A port, and an HDMI 2.1 port, offering more connectivity options than the MacBook Air. The keyboard provides satisfying feedback and ample travel, while the Windows Hello authentication system offers convenient security. The laptop has a 14-inch OLED display with a resolution of 1920 x 1200 pixels and performs well with applications from Microsoft 365 and Google Workspace, although it struggles with heavier workloads in Da Vinci Resolve. The ZenBook A14 has a battery life of around eight hours on a single charge.

AppWizard

May 12, 2025

What is Mending Enchantment: How to Get Mending in Minecraft? | Esports News – The Times of India

Mending is an enchantment in Minecraft that allows players to repair tools, weapons, and armor using experience points. It is not available through the enchanting table and must be obtained through trading with librarian villagers, fishing, looting chests in generated structures, or raid drops (in Bedrock Edition). To acquire Mending, players can transform a villager into a librarian and refresh their trade offers until Mending appears, fish for a chance to catch an enchanted book, explore structures like jungle temples and strongholds for chests containing Mending, or participate in village raids. Once obtained, Mending can be applied to an item using an anvil, but it can only be used once per item and cannot coexist with the Infinity enchantment.

AppWizard

May 11, 2025

Blaze XP Farm Guide for Minecraft Java Edition | Esports News – The Times of India

Collecting experience points (XP) in Minecraft is important for enchanting gear and progressing in the game. Blaze farms are an efficient way to gather XP, as defeating a Blaze yields 10 XP points and has a 50% chance of dropping a blaze rod, which is essential for brewing and fuel. To build a Blaze XP farm in Minecraft Java Edition, players should follow these steps: 1. Locate a Blaze Spawner in a Nether Fortress. 2. Prepare the area by illuminating the spawner and clearing a 9x9x5 space around it. 3. Construct a containment chamber using durable materials to enclose the spawner and create a funnel system for the Blazes. 4. Design a killing mechanism, which can be manual, semi-automatic, or automatic. 5. Optimize the farm by incorporating hopper systems for collecting drops and storage chests for managing blaze rods. Players should ensure their safety with fire-resistant gear and secure the location with torches and barriers during construction.

AppWizard

May 7, 2025

Today’s Android app deals and freebies: Streets of Rage 4, Roundguard, Front Armies, more

The afternoon features various Android game and app deals, including a significant discount on the 1TB unlocked Pixel 9 Pro XL. The device is now available at a notable price reduction. Additionally, Spigen’s Lite Fit fabric Galaxy Watch Ultra Band is offered at an attractive price. Samsung’s new Galaxy Tab S10 FE/+ is also highlighted for its performance and functionality. Notable app deals include "Streets of Rage 4," "Roundguard," and "Front Armies."

Tech Optimizer

May 3, 2025

Understanding transaction visibility in PostgreSQL clusters with read replicas

On April 29, 2025, Jepsen released a report on transaction visibility behavior in Amazon RDS for PostgreSQL and its Multi-AZ clusters, which has been acknowledged since at least 2013. The report identifies a Long Fork anomaly affecting the visibility order of transactions between primary and replica nodes in cluster configurations, which does not lead to data loss or corruption and is absent in Single-AZ deployments. This anomaly allows two readers to see transactions in different sequences, breaching Snapshot Isolation. It affects all isolation levels in community PostgreSQL and can also occur in self-managed deployments. The issue has been discussed extensively in the PostgreSQL community, and potential solutions, including synchronizing visibility with commit order using Commit Sequence Numbers, have been proposed. AWS has established the PostgreSQL Contributors Team to address this anomaly and enhance PostgreSQL's capabilities.

AppWizard

May 1, 2025

The new Boox Go 7 series, a Kindle rival, finally makes Android apps on E Ink colorful

Boox has launched the Go 7 series, which includes the Go 7 and Go Color 7 (Gen II) e-readers. The Go 7 features a 7-inch E Ink Carta 1300 monochrome display with a 300 ppi resolution, while the Go Color 7 uses a Kaleido 3 color E Ink panel. Both models operate on Android 13, have 4GB of RAM, 64GB of internal storage, and support a microSD card. They weigh 195 grams, have adjustable front lights, and include features for handwriting with the Boox InkSense stylus. The Go 7 is priced at 9.99, and the Go Color 7 is also priced at 9.99, positioning them against competitors like the Kindle Paperwhite and Kobo Libra 2.