The document discusses best practices for scalability and performance when developing PHP applications. Some key points include profiling and optimizing early, cooperating between development and operations teams, testing on production-like data, caching frequently accessed data, avoiding overuse of hard-to-scale resources, and using compiler caching and query optimization. Decoupling applications, caching, data federation, and replication are also presented as techniques for improving scalability.
TSM FastBack provides disk-based, block-level backups for remote office data with near-instant file, folder, volume, and system recovery from any point in time. It integrates with IBM Tivoli Storage Manager for centralized data protection and disaster recovery capabilities. Key benefits include eliminating backup windows, reducing recovery time objectives (RTO), and providing flexible recovery options without dedicated on-site IT staff.
This presentation provides an introduction to the (subjectively) most useful tools for debugging on Windows.
The document discusses availability and reliability in distributed systems. It describes that for a system to be truly reliable, it must be fault-tolerant, highly available, recoverable, consistent, scalable, have predictable performance, and be secure. It then discusses how the namenode is a single point of failure in Hadoop, and describes various approaches to improve availability through replicating metadata and using secondary or backup nodes.
IBM European WebSphere Technical Conference 2010 presentation Application performance issues can be difficult to resolve but can seriously impact your business. In this session we provide you with a solid overview of performance best practices for the current WebSphere Application Server runtime. We will go over a number key components and provide you with real examples of application performance issues from the field. Topics include the JVM and recent advances in Garbage Collection, JMS, the EJB container, the Dynamic Cache Service, HA Manager, thread pooling and transaction management. Note that this session is not an overview of product benchmarks.
This document discusses various techniques for optimizing PHP application performance, including network optimization using load balancers, database scaling using replication and caching, application optimization using profiling and caching, and server optimization using clustering. It recommends using tools like Xdebug and Zend Server's code tracing and profiling to identify bottlenecks and optimize applications. The overall message is that a holistic approach considering the network, databases, applications and servers is needed to achieve high performance PHP applications.
The document discusses IBM Lotus Notes and Domino 8.5 certification. It outlines the new core certification paths and exams released in 2011. Individuals looking to certify on Notes Domino 8.5 should pass exams LOT-925 and LOT-926. LOT-926 focuses on managing and maintaining Notes Domino 8.5 environments and covers topics like policies, installation, mail, and security.
The document discusses garbage collection, tuning, and monitoring the Java Virtual Machine (JVM) in Oracle E-Business Suite 11i and R12. It begins by introducing garbage collection and its role in memory management. It then covers key garbage collection concepts like generations, collectors, and metrics for measurement. The document also lists some notable JVM parameters and provides guidance on monitoring the JVM. It concludes by mentioning future changes related to the JRockit JVM.
The document discusses the evolution of the user interface design for Microsoft Windows CE. It describes three iterations: the Handheld PC from 1995 which resembled a desktop PC but had usability issues; the Palm PC from 1998 which had a smaller screen and alternative inputs like handwriting but data entry was still difficult; and the Auto PC from 1998 which was designed for in-car use without a touchscreen or stylus and emphasized voice commands. While Windows CE aimed for consistency with desktop Windows, usability tests revealed issues at each stage and consistency alone did not guarantee success.
The document discusses new features in IBM Domino 9 and 9.0.1, including improvements to the Database Management Tool (DBMT) for automating database maintenance tasks. DBMT allows administrators to compact databases, purge deletion stubs, expire soft deletes, and perform other maintenance without interrupting users. It can run maintenance tasks in parallel and ensure tasks are completed even if they exceed allocated time frames. The document also covers new options for DBMT related to mail file compaction and delivery failover in clustered environments.
Notes / Domino administrator best practices for finding the gremlins in your environment and avoiding them. This session was presented at IamLUG by David Hablewitz and Kim Greene.
This document summarizes a presentation on secure engineering practices for Java given at JavaOne 2013. It discusses the importance of software assurance over just security controls. It emphasizes that achieving a high level of software assurance requires attention to security throughout the development lifecycle, including risk assessment, secure coding practices, security testing, documentation, and incident response. The presentation recommends that development teams understand security risks and threats in order to build secure software.
In our tests, we found that the HP Z8 tower with Intel Xeon Gold 6226R processors completed three sample media and entertainment tasks in up to 44 percent less time than the Apple Mac Pro with Intel Xeon W-3275M processor, while adding only 11 percent to the purchase price.
Deploying a Dell EMC PowerEdge R740 with pre-installed Microsoft Windows Server 2016 Standard took less time and fewer steps than deploying the same server without it
Daniel Petri from MCS Israel presented on the Infrastructure & Management User Group on how to conduct a clean migration from AD 2003 to AD 2008 R2.
Delphix allows databases to run as software rather than hardware, using less space while maintaining full functionality and performance. It turns database servers into a single, virtual authority that can consolidate databases and instantly provision copies for development, testing, and other non-production uses. This cuts capital expenses by 50% and operational expenses by 90% while accelerating innovation by eliminating the time and costs associated with copying and moving databases between environments.
My Top 10 Scalability Mistakes talk updated for O'Reilly's Open Source Convention in Portland, OR 2008
The document provides tips on common scalability mistakes made when designing web applications and strategies to avoid them. It discusses the importance of considering scalability from the beginning, avoiding blocking calls, caching frequently accessed data, optimizing database and file system usage, and using tools like profilers to identify bottlenecks. The key is designing applications that can scale both up and down based on current needs through a proactive, process-oriented approach.
An extended version of my famed Top 10 Scalability Mistakes talk given at various conferences around the world.
To scale PHP web applications: 1) Focus on fundamentals like testable code, efficient data structures and algorithms, and designing for change. 2) Optimize performance through caching, using databases efficiently, and leveraging PHP features. 3) Employ techniques like asynchronous processing, parallel computing, and service-oriented architectures to spread load across servers.
This document provides information on improving Drupal performance through various techniques including performance testing, caching, optimizing database and server configurations, using tools like Varnish, load balancers, and CDNs, and addressing inefficient code. It also discusses a case study of using scalable cloud hosting and caching strategies to handle peak traffic for a site during major awards events.
A very successful talk where in I discuss the top 10 failures of organizations I have personally experienced when trying to scale. More than just performance!
This document discusses using XHProf to perform performance tuning of PHP applications. It begins with an introduction of the speaker and their company Pardot. It then provides an overview of XHProf including how to install, configure, and use it to profile PHP applications. The document outlines various performance tips for PHP such as optimizing array operations, managing memory efficiently, and improving database queries. It also walks through some examples of profiling a sample Symfony application that involves getting click data from a database. The examples demonstrate how to optimize queries and object hydration to improve performance.
The document provides tips for building a scalable and high-performance website, including using caching, load balancing, and monitoring. It discusses horizontal and vertical scalability, and recommends planning, testing, and version control. Specific techniques mentioned include static content caching, Memcached, and the YSlow performance tool.
I presented to the Georgia Southern Computer Science ACM group. Rather than one topic for 90 minutes, I decided to do an UnConference. I presented them a list of 8-9 topics, let them vote on what to talk about, then repeated. Each presentation was ~8 minutes, (Except Career) and was by no means an attempt to explain the full concept or technology. Only to wake up their interest.
Hadoop Summit 2010 - application track Data Applications and Infrastructure at LinkedIn Jay Kreps, LinkedIn
This document discusses how to scale PHP applications to meet high demand. It begins by noting that large companies like Facebook and Wikipedia use PHP. It then outlines several techniques for scaling PHP, including: using opcode caches to improve performance; storing sessions in a database rather than disk; leveraging in-memory data caches like Memcached and Redis; doing blocking work in background tasks via queues; and utilizing HTTP caching with a reverse proxy cache. The document emphasizes that performance is important for user experience and business results, and that these techniques can help PHP applications handle high traffic loads.
The document provides tips and strategies for optimizing Domino server performance, with a focus on addressing disk I/O bottlenecks. It recommends separating database files onto different physical disks based on I/O needs, avoiding journaling file systems for transaction logs, optimizing RAID configurations, and addressing inefficient views and design patterns that can degrade performance. Specific issues covered include transaction logging, indexing, database design, and application usage patterns.