IoT User Interface Authors: Elizabeth White, Kevin Benedict, Dana Gardner, Ed Featherston, Liz McMillan

Related Topics: Open Source Cloud, Java IoT, Microsoft Cloud, Linux Containers, IoT User Interface, Apache

Open Source Cloud: Article

Ten Tips for MySQL Users

The things every MySQL user should know

MySQL, just like other relational databases, is complicated. It can jam at any time jeopardizing your applications or business without notice. Most MySQL malfunctions are due to common mistakes. It is essential to avoid these mistakes, often hidden by configuration trap or workload, to ensure that MySQL server runs effectively. Here are 10 tips to ensure excellent performance of the MySQL server.

Profile your workload
Profiling the server's workload is the best way to know how the server spends time. This exposes the most exclusive questions for tuning. Time is very essential here as one considers how quickly the server completes a request when a query is issued it. Similar queries are grouped by these tools together in a row in order to distinguish slow and fast queries.

Understand the fundamental resources
A database server requires four important resources to function: CPU, disk, network and memory all of which if erratic, overloaded or weak may cause the database to malfunction. It is important to understand these resources in troubleshooting problems and choosing hardware. Ensure all components are functioning well and reasonably balanced against each other when choosing hardware for MySQL. Server performance can be cheaply enhanced by adding memory on disk-bound workloads. On the other hand, MySQL performs best with fast CPUs since each query cannot be paralleled across CPUs. When troubleshooting, performance and utilization of resources must be checked carefully to determine whether it is overloaded or functioning poorly. This also goes for using database conversion tools.

MySQL should not be set as a queue
Queues may invade your application without your knowledge. For instance, when a status is set such that a particular worker process claims it before acting on it, then you are certainly creating a queue. Queues cause problems by serializing workload and preventing tasks from being executed in parallel.

Filter results
MySQL can be optimized to do cheap work first then the hard work, on a smaller set of resulting data. For instance, when searching for something within a radius of a given geographical point, the great-circle (Haversine) formula is the tool used for calculating distance on the surface of a sphere. This formula, however, needs a lot of CPU-sensitive trigonometric calculations thus posing a problem as the CPU utilization rises due to slow operations. It is hence necessary to pare down records to a smaller subset of the total and trimming the resulting set to a precise circle before using this formula

Understanding the scalability death traps
Unlike common beliefs, scalability is not vague as there are exact mathematical equations expressing scalability. The equations show why systems do not scale as they should. The universal scalability law explains scaling in terms of serialization and crosstalk. Parallel processes that must stop for a serialized process to take place are limited in scalability. Similarly, when parallel processes chat with each other consistently to coordinate their work, they hinder each other. Applications scale better when crosstalk and serialization are avoided, which translate to locks on rows for MySQL.

Too much focus should not be placed on configuration
DBAs spend time tweaking configurations resulting in a small improvement that can be damaging. Not all MySQL defaults should be configured. Ninety-five percent of the server's best performance can be obtained by correct setting of 10 options. Server tuning tools are recommended for giving guidelines.

Look out for pagination queries that cause the server to malfunction
This causes the server to generate a lot of work and discard rows. Optimization can be done to set the final row as the starting point for another set of results.

Save statistics promptly, alert reluctantly
It is important to capture and save metrics as they are essential in effecting changes in the system. Meanwhile, alert sparingly and only on conditions indicating an actionable problem.

Learn the three rules of indexing
Properly designed indexes serve three functions in a database: Allow the server identify groups of adjacent rows, avoid sorting by reading in a preferred order and satisfy all queries from the index alone.

Leverage the expertise of your peers
Doing what you feel is logical will work most of the times but not all the times. The time it doesn't work may cost you time and money.

More Stories By Anne Lee

Anne Lee is a freelance technology journalist, a wife and a mother of two.

@CloudExpo Stories
Governments around the world are adopting Safe Harbor privacy provisions to protect customer data from leaving sovereign territories. Increasingly, global companies are required to create new instances of their server clusters in multiple countries to keep abreast of these new Safe Harbor laws. Is it worth it? In his session at 19th Cloud Expo, Adam Rogers, Managing Director of Anexia, Inc., will discuss how to keep your data legal and still stay in business.
In his session at 19th Cloud Expo, Nick Son, Vice President of Cyber Risk & Public Sector at Coalfire, will discuss the latest information on the FedRAMP Program. Topics will cover: FedRAMP Readiness Assessment Report (RAR). This new process is designed to streamline and accelerate the FedRAMP process from the traditional timeline by initially focusing on technical capability instead of documentation preparedness. FedRAMP for High-impact level systems. Early in 2016 FedRAMP officially publishe...
Qosmos, the market leader for IP traffic classification and network intelligence technology, has announced that it will launch the Launch L7 Viewer at CloudExpo | @ThingsExpo Silicon Valley, being held November 1 – 3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. The L7 Viewer is a traffic analysis tool that provides complete visibility of all network traffic that crosses a virtualized infrastructure, up to Layer 7. It facilitates and accelerates common IT tasks such as VM migra...
In the 21st century, security on the Internet has become one of the most important issues. We hear more and more about cyber-attacks on the websites of large corporations, banks and even small businesses. When online we’re concerned not only for our own safety but also our privacy. We have to know that hackers usually start their preparation by investigating the private information of admins – the habits, interests, visited websites and so on. On the other hand, our own security is in danger bec...
The explosion of new web/cloud/IoT-based applications and the data they generate are transforming our world right before our eyes. In this rush to adopt these new technologies, organizations are often ignoring fundamental questions concerning who owns the data and failing to ask for permission to conduct invasive surveillance of their customers. Organizations that are not transparent about how their systems gather data telemetry without offering shared data ownership risk product rejection, regu...
As companies adopt the cloud-to-streamline workflow, deployment hasn’t been very seamless because of IT concerns surrounding security risks. The cloud offers many benefits, but protecting and securing information can be tricky across multiple cloud providers and remains IT’s overall responsibility. In his session at 19th Cloud Expo, Simon Bain, CEO of SearchYourCloud, will address security compliance issues associated with cloud applications and how document-level encryption is critical for sup...
Successful digital transformation requires new organizational competencies and capabilities. Research tells us that the biggest impediment to successful transformation is human; consequently, the biggest enabler is a properly skilled and empowered workforce. In the digital age, new individual and collective competencies are required. In his session at 19th Cloud Expo, Bob Newhouse, CEO and founder of Agilitiv, will draw together recent research and lessons learned from emerging and established ...
SYS-CON Events announced today that Cemware will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Use MATLAB functions by just visiting website mathfreeon.com. MATLAB compatible, freely usable, online platform services. As of October 2016, 80,000 users from 180 countries are enjoying our platform service.
SYS-CON Events announced today that MathFreeOn will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. MathFreeOn is Software as a Service (SaaS) used in Engineering and Math education. Write scripts and solve math problems online. MathFreeOn provides online courses for beginners or amateurs who have difficulties in writing scripts. In accordance with various mathematical topics, there are more tha...
Data is the fuel that drives the machine learning algorithmic engines and ultimately provides the business value. In his session at Cloud Expo, Ed Featherston, a director and senior enterprise architect at Collaborative Consulting, will discuss the key considerations around quality, volume, timeliness, and pedigree that must be dealt with in order to properly fuel that engine.
SYS-CON Events announced today that StarNet Communications will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. StarNet Communications’ FastX is the industry first cloud-based remote X Windows emulator. Using standard Web browsers (FireFox, Chrome, Safari, etc.) users from around the world gain highly secure access to applications and data hosted on Linux-based servers in a central data center. ...
The best way to leverage your Cloud Expo presence as a sponsor and exhibitor is to plan your news announcements around our events. The press covering Cloud Expo and @ThingsExpo will have access to these releases and will amplify your news announcements. More than two dozen Cloud companies either set deals at our shows or have announced their mergers and acquisitions at Cloud Expo. Product announcements during our show provide your company with the most reach through our targeted audiences.
In his general session at 19th Cloud Expo, Manish Dixit, VP of Product and Engineering at Dice, will discuss how Dice leverages data insights and tools to help both tech professionals and recruiters better understand how skills relate to each other and which skills are in high demand using interactive visualizations and salary indicator tools to maximize earning potential. Manish Dixit is VP of Product and Engineering at Dice. As the leader of the Product, Engineering and Data Sciences team a...
Virgil consists of an open-source encryption library, which implements Cryptographic Message Syntax (CMS) and Elliptic Curve Integrated Encryption Scheme (ECIES) (including RSA schema), a Key Management API, and a cloud-based Key Management Service (Virgil Keys). The Virgil Keys Service consists of a public key service and a private key escrow service. 

SYS-CON Events announced today that eCube Systems, the leading provider of modern development tools and best practices for Continuous Integration on OpenVMS, will exhibit at SYS-CON's @DevOpsSummit at Cloud Expo New York, which will take place on June 7-9, 2016, at the Javits Center in New York City, NY. eCube Systems offers a family of middleware products and development tools that maximize return on technology investment by leveraging existing technical equity to meet evolving business needs. ...
@ThingsExpo has been named the Top 5 Most Influential Internet of Things Brand by Onalytica in the ‘The Internet of Things Landscape 2015: Top 100 Individuals and Brands.' Onalytica analyzed Twitter conversations around the #IoT debate to uncover the most influential brands and individuals driving the conversation. Onalytica captured data from 56,224 users. The PageRank based methodology they use to extract influencers on a particular topic (tweets mentioning #InternetofThings or #IoT in this ...
Join Impiger for their featured webinar: ‘Cloud Computing: A Roadmap to Modern Software Delivery’ on November 10, 2016, at 12:00 pm CST. Very few companies have not experienced some impact to their IT delivery due to the evolution of cloud computing. This webinar is not about deciding whether you should entertain moving some or all of your IT to the cloud, but rather, a detailed look under the hood to help IT professionals understand how cloud adoption has evolved and what trends will impact th...
More and more brands have jumped on the IoT bandwagon. We have an excess of wearables – activity trackers, smartwatches, smart glasses and sneakers, and more that track seemingly endless datapoints. However, most consumers have no idea what “IoT” means. Creating more wearables that track data shouldn't be the aim of brands; delivering meaningful, tangible relevance to their users should be. We're in a period in which the IoT pendulum is still swinging. Initially, it swung toward "smart for smar...
Enterprises have been using both Big Data and virtualization for years. Until recently, however, most enterprises have not combined the two. Big Data's demands for higher levels of performance, the ability to control quality-of-service (QoS), and the ability to adhere to SLAs have kept it on bare metal, apart from the modern data center cloud. With recent technology innovations, we've seen the advantages of bare metal erode to such a degree that the enhanced flexibility and reduced costs that cl...
All clouds are not equal. To succeed in a DevOps context, organizations should plan to develop/deploy apps across a choice of on-premise and public clouds simultaneously depending on the business needs. This is where the concept of the Lean Cloud comes in - resting on the idea that you often need to relocate your app modules over their life cycles for both innovation and operational efficiency in the cloud. In his session at @DevOpsSummit at19th Cloud Expo, Valentin (Val) Bercovici, CTO of So...