Welcome!

Microsoft Cloud Authors: Pat Romanski, Elizabeth White, Liz McMillan, Mihai Corbuleac, David Bermingham

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.

@ThingsExpo Stories
It is one thing to build single industrial IoT applications, but what will it take to build the Smart Cities and truly society changing applications of the future? The technology won’t be the problem, it will be the number of parties that need to work together and be aligned in their motivation to succeed. In his Day 2 Keynote at @ThingsExpo, Henrik Kenani Dahlgren, Portfolio Marketing Manager at Ericsson, discussed how to plan to cooperate, partner, and form lasting all-star teams to change t...
Connected devices and the industrial internet are growing exponentially every year with Cisco expecting 50 billion devices to be in operation by 2020. In this period of growth, location-based insights are becoming invaluable to many businesses as they adopt new connected technologies. Knowing when and where these devices connect from is critical for a number of scenarios in supply chain management, disaster management, emergency response, M2M, location marketing and more. In his session at @Th...
Internet of @ThingsExpo, taking place November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with the 19th International Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world and ThingsExpo Silicon Valley Call for Papers is now open.
Machine Learning helps make complex systems more efficient. By applying advanced Machine Learning techniques such as Cognitive Fingerprinting, wind project operators can utilize these tools to learn from collected data, detect regular patterns, and optimize their own operations. In his session at 18th Cloud Expo, Stuart Gillen, Director of Business Development at SparkCognition, discussed how research has demonstrated the value of Machine Learning in delivering next generation analytics to imp...
SYS-CON Events announced today that ReadyTalk, a leading provider of online conferencing and webinar services, has been named Vendor Presentation Sponsor 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. ReadyTalk delivers audio and web conferencing services that inspire collaboration and enable the Future of Work for today’s increasingly digital and mobile workforce. By combining intuitive, innovative tec...
Amazon has gradually rolled out parts of its IoT offerings, but these are just the tip of the iceberg. In addition to optimizing their backend AWS offerings, Amazon is laying the ground work to be a major force in IoT - especially in the connected home and office. In his session at @ThingsExpo, Chris Kocher, founder and managing director of Grey Heron, explained how Amazon is extending its reach to become a major force in IoT by building on its dominant cloud IoT platform, its Dash Button strat...
The cloud market growth today is largely in public clouds. While there is a lot of spend in IT departments in virtualization, these aren’t yet translating into a true “cloud” experience within the enterprise. What is stopping the growth of the “private cloud” market? In his general session at 18th Cloud Expo, Nara Rajagopalan, CEO of Accelerite, explored the challenges in deploying, managing, and getting adoption for a private cloud within an enterprise. What are the key differences between wh...
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, provided an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life sett...
19th Cloud Expo, taking place November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, will feature technical sessions from a rock star conference faculty and the leading industry players in the world. Cloud computing is now being embraced by a majority of enterprises of all sizes. Yesterday's debate about public vs. private has transformed into the reality of hybrid cloud: a recent survey shows that 74% of enterprises have a hybrid cloud strategy. Meanwhile, 94% of enterpri...
SYS-CON Events announced today that Bsquare has been named “Silver Sponsor” of SYS-CON's @ThingsExpo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. For more than two decades, Bsquare has helped its customers extract business value from a broad array of physical assets by making them intelligent, connecting them, and using the data they generate to optimize business processes.
There are several IoTs: the Industrial Internet, Consumer Wearables, Wearables and Healthcare, Supply Chains, and the movement toward Smart Grids, Cities, Regions, and Nations. There are competing communications standards every step of the way, a bewildering array of sensors and devices, and an entire world of competing data analytics platforms. To some this appears to be chaos. In this power panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, Bradley Holt, Developer Advocate a...
There is little doubt that Big Data solutions will have an increasing role in the Enterprise IT mainstream over time. Big Data at Cloud Expo - to be held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA - has announced its Call for Papers is open. Cloud computing is being adopted in one form or another by 94% of enterprises today. Tens of billions of new devices are being connected to The Internet of Things. And Big Data is driving this bus. An exponential increase is...
Internet of @ThingsExpo, taking place November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 19th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The Internet of Things (IoT) is the most profound change in personal and enterprise IT since the creation of the Worldwide Web more than 20 years ago. All major researchers estimate there will be tens of billions devices - comp...
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, wh...
Cloud computing is being adopted in one form or another by 94% of enterprises today. Tens of billions of new devices are being connected to The Internet of Things. And Big Data is driving this bus. An exponential increase is expected in the amount of information being processed, managed, analyzed, and acted upon by enterprise IT. This amazing is not part of some distant future - it is happening today. One report shows a 650% increase in enterprise data by 2020. Other estimates are even higher....
Cognitive Computing is becoming the foundation for a new generation of solutions that have the potential to transform business. Unlike traditional approaches to building solutions, a cognitive computing approach allows the data to help determine the way applications are designed. This contrasts with conventional software development that begins with defining logic based on the current way a business operates. In her session at 18th Cloud Expo, Judith S. Hurwitz, President and CEO of Hurwitz & ...
In his general session at 18th Cloud Expo, Lee Atchison, Principal Cloud Architect and Advocate at New Relic, discussed cloud as a ‘better data center’ and how it adds new capacity (faster) and improves application availability (redundancy). The cloud is a ‘Dynamic Tool for Dynamic Apps’ and resource allocation is an integral part of your application architecture, so use only the resources you need and allocate /de-allocate resources on the fly.
The 19th International Cloud Expo has announced that its Call for Papers is open. Cloud Expo, to be held November 1-3, 2016, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, Big Data, Internet of Things, DevOps, Digital Transformation, Microservices and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding business opportuni...
industrial company for a multi-year contract initially valued at over $4.0 million. In addition to DataV software, Bsquare will also provide comprehensive systems integration, support and maintenance services. DataV leverages advanced data analytics, predictive reasoning, data-driven diagnostics, and automated orchestration of remediation actions in order to improve asset uptime while reducing service and warranty costs.
Vidyo, Inc., has joined the Alliance for Open Media. The Alliance for Open Media is a non-profit organization working to define and develop media technologies that address the need for an open standard for video compression and delivery over the web. As a member of the Alliance, Vidyo will collaborate with industry leaders in pursuit of an open and royalty-free AOMedia Video codec, AV1. Vidyo’s contributions to the organization will bring to bear its long history of expertise in codec technolo...