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Amazon
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123
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Capture and diagnose I/O bottlenecks on Amazon RDS for SQL Server
- In this post, we demonstrate how you can use Amazon RDS monitoring tools along with SQL Server monitoring capabilities to capture, diagnose, and resolve I/O issues on an RDS for SQL Server instance.
- It’s important to understand the I/O requirements of a SQL Server workload, which is dependent on various factors like query access patterns, database schema, and state of database maintenance.
- Before we dive into understanding I/O bottlenecks, let’s examine the configuration of an RDS instance, including the instance class, storage type, and storage size.
- I/O bottleneck can be detected by checking how fast the I/O request is processed, understanding I/O latencies and throughput, identifying top SQLs contributing to high I/O activity and understanding database physical and logical design.
- Addressing bottlenecks on a database typically requires multiple approaches. The first and foremost is to ensure that the database design, schema, and maintenance are optimal for best performance.
- We observed that tempdb is also busy contributing to I/O and network utilization because tempdb is on an EBS volume, indicating a tempdb bottleneck.
- We showed you how to use Amazon RDS Performance Insights to identify and diagnose I/O performance-related issues.
- Additionally, we discussed other performance optimization strategies that can serve as guidance to improve the I/O performance of your RDS instance.
- This change reduced the network throughput usage as compared to before.
- Besides right-sizing your RDS instance, table and index design as well as optimized code can help to minimize I/O bottlenecks.
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Dev
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438
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Oracle Cloud HCM 24D Release: What’s New?
- Oracle 24D HCM is set to release in November 2024.
- This blog will provide a high-level summary of the new features introduced in the Oracle HCM 24D release.
- The latest features, fixes, and enhancements for your environment are guaranteed by these required quarterly releases.
- Quick and easy update certification can be achieved through Opkey's No-Code test automation solution.
- New features introduced in the release are for Global Human Resources, Benefits, Compensation, Talent Management, Recruiting, Learning, Absence Management, Time and Labour, and Payroll.
- Redwood experience pages have been developed in VBS.
- AI will help in job profile management, effective feedback and performance goals.
- Oracle Maps as introduced in the 23D update has replaced Google maps and Bing Maps.
- Opkey's pre-built accelerator library contains 7,000 Oracle Cloud business components and test scripts for various HCM modules.
- Opkey's managed Oracle Cloud certification will assist users with the Oracle HCM Cloud 24D update testing.
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Dev
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312
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Dynamic SQL in Oracle SQL | Best Explanation
- Dynamic SQL in Oracle allows you to build and execute SQL statements at runtime.
- This approach is useful when you need to execute SQL queries whose structure isn't known until runtime.
- There are several ways to implement dynamic SQL in Oracle:
- EXECUTE IMMEDIATE is used to execute dynamically built SQL statements at runtime.
- Bind variables are placeholders in SQL queries that are replaced with actual values at runtime.
- REF CURSOR is a pointer to a result set.
- DBMS_SQL package provides a more advanced and flexible way to handle dynamic SQL.
- Other key aspects are dynamic DDL, error handling in dynamic SQL, plan caching, and SQL injection prevention.
- Dynamic SQL in Oracle provides the flexibility to construct and execute SQL queries dynamically at runtime.
- The key concepts of dynamic SQL — such as EXECUTE IMMEDIATE, bind variables, REF CURSOR, and DBMS_SQL — are essential tools for managing dynamic queries and improving performance, flexibility, and security.
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Dev
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37
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SQL Injection (SQLi) Vulnerabilities in WordPress: Prevention Tips
- SQL Injection (SQLi) is a common security vulnerability in WordPress that allows attackers to manipulate databases.
- SQLi in WordPress can lead to unauthorized access to sensitive data and even full control of the site.
- To protect your WordPress site from SQLi, validate input fields, use security plugins, and run automated security checks.
- Additional measures include using prepared statements, regular updates, limiting user permissions, and employing a Web Application Firewall (WAF).
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Dbi-Services
1M
13
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PostgreSQL: Maybe we should give ZFS a chance (1) – baseline
- The author decided to run some tests comparing the performance of ext4 and ZFS in PostgreSQL environments.
- The testing was done on a t3.medium instance with two 20GB gp3 disks, one using an ext4 filesystem and the other one for ZFS.
- ZFS is not available by default in the Debian repositories, so some extra steps are needed like adding the backports repository and installing kernel sources before ZFS install.
- Once ZFS is installed the kernel modules become available and can be loaded using modprobe command.
- The author initialized PostgreSQL for the ext4 filesystem by enabling data checksums, this step is not required for the ZFS filestem as ZFS is doing this anyway.
- The author changed two bits for the ZFS instance, turning off full_page_writes and wal_init_zero which is not required on ZFS.
- Ready to start both clusters by pg_ctl commands.
- Now the author is ready to start with the tests.
- Stay tuned for the results in the next post.
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Dev
1M
135
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Setting Up MySQL on Kubernetes with Prometheus & Grafana Monitoring
- This tutorial explains how to set up MySQL on a Kubernetes cluster with Prometheus and Grafana for monitoring.
- The tutorial covers creating a namespace for the lab, installing MySQL using Helm charts, accessing the MySQL pod, creating a database and tables, and installing Prometheus and Grafana for monitoring.
- It also includes steps to expose MySQL with LoadBalancer, install Prometheus MySQL Exporter for collecting metrics, connect Grafana to Prometheus, and import Grafana dashboards to monitor MySQL.
- Overall, this tutorial provides a comprehensive guide to set up and monitor MySQL on Kubernetes with Prometheus and Grafana tools.
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8 Likes
Dev
1M
74
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Top 5 SQL questions asked in interviews
- Delete command is used to delete a particular row or a set of rows from the table which meet the conditions specified in the query.
- Truncate command is used to delete all the rows from a table keeping the table structure intact.
- The different subsets of SQL are DDL, DML, DCL, TCL.
- A DBMS (Database Management System) is a software or technology used to manage data from a database.
- Hierarchical DBMS organizes data in a tree-like structure with parent-child relationships.
- A table is a structured collection of related data organized in rows and columns within a database.
- A field is a single attribute or data type in a table, defining what type of information each entry (row) in the table will hold.
- A foreign key in SQL is a column (or a set of columns) in one table that references the primary key of another table.
- This key is used to create a link between two tables, ensuring referential integrity by making sure that the values in the foreign key column(s) match values in the primary key column(s) of the referenced table.
- SQL questions mentioned in the article will help you to prepare for your interview
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Amazon
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408
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Know before you go: Amazon DynamoDB sessions at AWS re:Invent 2024
- AWS re:Invent 2024 is just around the corner, here are the sessions covering Amazon DynamoDB.
- Hear from AWS and DynamoDB leaders about the latest innovations and trends in cloud computing.
- Dive deep into the architecture behind DynamoDB, exploring the technology that delivers exceptional performance and reliability.
- Discover how the architecture of DynamoDB overcomes the limitations of relational databases to power the most demanding applications on the planet.
- Learn about advanced data modeling and integration strategies to build scalable and efficient applications.
- Explore zero-ETL integrations, architectures that help customers navigate considerations for designing zero-ETL workloads with DynamoDB.
- Sessions include data modeling core concepts, DynamoDB design puzzles, and advanced data modeling.
- Discover how organizations can transform by adopting microservices and cloud-native SaaS architectures.
- Learn from customer sessions such as Klarna and Werfen about how to build secure and highly scalable workloads on AWS with DynamoDB.
- Download the official AWS Events mobile application to stay informed in planning and navigating your re:Invent experience.
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24 Likes
Amazon
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222
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Best practices for running Apache Cassandra with Amazon EBS
- AWS operators often ask what storage they should use to get the best price-performance for Apache Cassandra.
- Developers want to use Amazon Elastic Block Store (Amazon EBS) instead of instance storage with Cassandra.
- Amazon EBS offers several advantages over an instance store that make it a solid choice.
- In this post, we discuss the basics of improving the performance of Amazon EBS with Cassandra to take advantage of the operational benefits.
- Linux iostat is a general-purpose tool to help you understand your I/O usage at a high level.
- You can find out your readahead by running a command and looking at the RA column for each device.
- Tuning compression, picking the right compaction strategy, and reducing—but not eliminating—readahead can minimize read amplification and keep your Cassandra cluster performance running consistently on Amazon EBS while reducing required IOPS.
- With the right tooling, monitoring, and configuration tuning, you can achieve great price-performance for running Cassandra deployments on EBS volumes while benefiting from operational advantages over ephemeral instance storage.
- Jon Haddad is an Apache Cassandra committer specializing in performance tuning, fixing broken clusters, and cost optimization.
- He previously worked on some of the biggest Cassandra deployments in the world.
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Cloudblog
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95
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Google is a Leader in The Forrester Wave™: Translytical Data Platforms, Q4 2024
- Google Cloud has been named a Leader in The Forrester Wave™: Translytical Data Platforms, Q4 2024 report.
- AlloyDB, Google's translytical data platform, offers a differentiated architecture that combines the performance of a traditional relational database with the scalability and flexibility of cloud-first technology.
- AlloyDB eliminates the need for complex data pipelines and separate databases for transactional, analytical, and AI workloads, allowing businesses to gain real-time integrated insights and build AI-powered customer experiences.
- Google received the highest scores in 11 evaluation criteria, including Vision, Innovation, Gen AI/LLM, Real-time Analytics, and Data Security.
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5 Likes
Dev
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263
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How to Move Data From MySQL to Redis in Real Time
- Redis is an open-source, in-memory, non-relational data store known for its high performance and flexibility.
- BladePipe is a real-time end-to-end data replication tool, simplifying data movement between diverse data sources.
- BladePipe supports automatic adaptation to sharded clusters in Redis and allows setting cache expiration time when writing data.
- To move data from MySQL to Redis using BladePipe, follow the steps: Install BladePipe, add DataSources, and create a DataJob.
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15 Likes
Siliconangle
1M
31
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Mastering open-source software security in a cloud-native era
- Open-source software has become an essential tool for companies but management of open-source software supply chains needs to be proactive in its approach to potential cybersecurity risks, rather than just compliance issues, according to the co-founder and CEO of solution platform Kosai. Around 84% of the entire enterprise code base is open source, which means a number of vulnerabilities put it at risk from cyber attacks. Stagnant software is another issue for enterprise applications; outdated open source or abandonware is used by 91% of them, with no support currently provided. A belief in 'shift left', embedding security testing earlier in software development, offers less management of risk and encourages innovation according to Kosai.
- The management of open-source software supply chains is vital to ensure cybersecurity risks are not the only things being managed. Open-source software now forms 84% of the enterprise code base.
- Businesses are more reliant on open-source software than ever before but management of supply chains is becoming increasingly important and needs to be proactive in terms of cybersecurity risks.
- Developers are under increasing pressure to deliver quickly and 'shift left' becomes an issue, hence it is seen as important to remain creative in terms of tackling management of open-source software.
- Open-source software is now crucial to helping organisations innovate while at the same time minimising cybersecurity risk.
- Open-source software is introduced to launch innovation projects in the enterprise environment, but those firms take huge risks because they often use outdated open-source components. Organisations must establish an open-source program office to ensure the long-term viability of the software they rely on.
- Preventing exploit of vulnerabilities in open-source software will require new tools and strategies, including developers who prioritise risk management alongside innovation, according to CEO of platform designer and operator Kosai.
- Open-source adoption is still growing rapidly, and corporate software supply chains are deteriorating in terms of safety. As a consequence, security management of open-source software has become essential to maintaining operational efficiencies.
- Kosai CEO Jonathan Simkins said that while traditional methods of securing the enterprise, as licensing and legal compliance, remain relevant, security has become less about ticking boxes and more about proactive risk aversion.
- Kosai has established a platform to give open-source software maintainers the means to monetise their work while giving software developers confidence in its security.
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Amazon
1M
376
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Tune Amazon RDS for Oracle CDBs with Amazon Performance Insights
- Amazon RDS for Oracle now supports the Oracle Multitenant configuration on versions 19c and 21c.
- Oracle Multitenant can consolidate standalone databases by creating or migrating to PDBs.
- Amazon RDS Performance Insights helps users visualize and analyze workload of individual PDBs in a CDB.
- Performance Insights is automatically enabled at database creation, using only around 1% of a vCPU.
- Performance Insights stores seven days of performance history in a rolling window.
- By slicing database load by the PDB and SQL dimensions, users can identify top queries running on each PDB.
- Users can monitor database load running at the PDB level through Performance Insights dashboard.
- This feature is particularly useful for identifying the most loaded PDB to simplify the troubleshooting process.
- Performance Insights is useful to identify individual PDB performance and quickly identify changes in the performance of a SQL query.
- It is the only native AWS tool for looking at database level information.
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VoIP
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427
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Vodafone and Oracle Unite for Global IoT Connectivity
- Vodafone and Oracle collaborate to provide global IoT connectivity for Oracle's Enterprise Communications Platform.
- Businesses can leverage Vodafone's global reach and secure IoT airtime in 180 countries.
- Oracle's ECP delivers immediate data insights and benefits industries like healthcare, construction, energy, and hospitality.
- Enhanced connectivity security and compliance with local regulations are key advantages of this collaboration.
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25 Likes
Dev
1M
122
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Creating a Remote Git Hub for Your Company(Without Github)
- In this article, we explore how to create a remote Git hub for your company without using GitHub.
- The backend implementation involves setting up a TypeScript server for handling Git operations and a Go server for handling Git push and pull operations.
- MySQL is integrated for data storage, and FIDO2 authentication is implemented for secure and passwordless login.
- By combining TypeScript, Go, MySQL, and FIDO2, you can create a robust and secure remote Git hub for your company with full control over your source code and user management.
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