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Showing entries 1 to 18

Displaying posts with tag: Web Operations (reset)

Cloud Deployment Interview
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Read the original article at Cloud Deployment Interview

What does a cloud computing expert need to know? In part one of the cloud interview guide we covered some basic unix & Linux systems administration skills, and cloud computing and infrastructure concepts. Those are key starting points. You might also want to jump to part 3 cloud dba, architecture and management interview questions.

In this second part, let’s dig into deploying applications in the cloud, and day to

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The Art of Resistance
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Sometimes, you have to be the bad guy. Be resistant to change. Here’s a story about how stubbornness pays off. As we’ve written about before A 4 letter word divides Dev & Ops.

I had one experience working as the primary MySQL DBA for an internet startup. Turns out they had Oracle for some applications too. And another DBA just to handle the Oracle stuff.

So it came time for Oracle guy to go on vacation. Suddenly these Oracle systems landed on my shoulders. We reviewed

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The Mythical MySQL DBA
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I’ve  been getting more than my fair share of calls from recruiters of late. Even in this depressed economic climate where jobs are rarer than a cab at rush-hour, it’s heartening to know that tech engineers are in great demand. And it’s even more heartening to think that demand for MySQL DBAs has never been better.

My reckoning was confirmed by a Bloomberg news report about stalwart retailers suffering from a dearth of talented engineers. Bloomberg cited Target’s outage-prone e-commerce site as a symptom of, among other things the market’s shortage. One of the challenges old-timers like Target face is having to compete with Silicon Valley startups

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How to hire a developer that doesn’t suck
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Read the original article at How to hire a developer that doesn’t suck

Strip by Randall Munroe; xkcd.com

First things first. This is not meant to be a beef against developers. But let’s not ignore the elephant in the living room that is the divide between brilliant code writers and the risk averse operations team.

It is almost by default that developers are disruptive with their creative coding while the guys in operations, those who deploy the code, constantly cross their fingers in the hope that application changes won’t tilt the machine. And when you’re woken up at 4am to deal with an outage or your sluggish site is costing millions in losses,

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Scale Quickly Like Birchbox – Startup Scalability 101
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Read the original article at Scale Quickly Like Birchbox – Startup Scalability 101

One of the great things about the Internet is how it has made it easier to put great ideas into practice. Whether the ideas are about improving people’s lives or a new way to sell and old-fashioned product, there’s nothing like a good little startup tale of creative disruption to deliver us from something old and tired.

We work with a lot of startup firms and we love being part of the atmosphere of optimism and ingenuity, peppered with a bit of youthful zeal - something very indie-rock-and-roll about it. But whether they are just starting out or already picking up pace every startup faces the same challenges to scale a business. Recently, we were reminded of this

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MySQL Database Management Expert – Database Management Consultant – Database Management Services
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Database Administration and Management is as important under MySQL as it is under other enterprise database platforms such as Oracle or SQL Server.  Be proactive with your database operations, and avoid outage or loss of your most crucial data.

  • MySQL Management and administration
  • MySQL Performance, Optimization & tuning
  • Remote Database Management
  • Database monitoring & metrics collection
  • MySQL Security Auditing
  • Migrating applications and data to MySQL
  • Migrating MySQL to the Amazon cloud
  • Migrating MySQL to Amazon RDS
  • Amazon RDS management & administration
  • MySQL scalability
  • Amazon RDS scalability
  • MySQL High Availability
  • MySQL Disaster Recovery
  • Database Management & replication for highly available architectures
  • Database security in the cloud

Skype or call us in NYC at +1-212-533-6828

5 Things That Are Toxic to Scalability
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Scalability is about application, architecture and infrastructure design, and careful management of server components.

1. Object Relational Mappers

ORMs are popular among developers but not among performance experts.  Why is that?  Primarily these two engineers experience a web application from entirely different perspectives.  One is building functionality, delivering features, and results are measured on fitting business requirements.  Performance and scalability are often low priorities at this stage.  ORMs allow developers to be much more productive, abstracting away the SQL difficulties of interacting with the backend datastore, and allowing them to concentrate on building the features and functionality.

On the performance side the picture is a bit different.  By leaving SQL query writing to an ORM, you are faced with complex queries that

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5 Tips for Better Database Change Management
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Deploying new code that includes changes to your database schema doesn't have to be a process fraught with stress and burned fingers. Follow these five tips and enjoy a good nights sleep.

1. Deploy with Roll Forward & Rollback Scripts

When developers check-in code that requires schema changes, that release should also require two scripts to perform database changes. One script will apply those changes, alter tables to add columns, change data types, seed data, clean data, create new tables, views, stored procedures, functions, triggers and so forth. A release should also include a rollback script, which would return tables to their previous state.

This idea of

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Top 3 Questions From Clients
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1. This page or area of the website is very slow, why?

There are a lot of components that make up modern internet websites, and a lot of places to get stuck in the mud.  Website performance starts with the browser, what caching it is doing, their bandwidth to your server, what the webserver is doing (caching or not and how), if the webserver has sufficient memory, and then what the application code is doing and lastly how it is interacting with the backend database.

With all this complexity, it's no wonder so many sites struggle.  Typically these types of analysis start with some load testing, to stress test your setup, so you can watch for leaks.  Then

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Specialty Technology Consultant – New York Scalability Consultant – MySQL & EC2 Scalability
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Amazon EC2 and cloud computing offer great promise for startups to ramp up their online presence quickly.  Navigate those challenges with an strong partner.  We bring 20 years experience to the table with each new client.

  • Scaling Web Applications
  • MySQL High Availability in Amazon EC2
  • Amazon Multi-AZ Deployments
  • Amazon RDS Deployments
  • Migrating to Amazon EC2
  • Migrating to MySQL
  • Managing Backups and Disaster Recovery in the Cloud
  • Horizontal Scalability of MySQL on EC2
  • Horizontal Scalability on Cloud Hosted Servers
  • Evaluating Cloud Providers
  • Evaluating MySQL
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Open Source Enables the Cloud
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With the fast growth of virtualized data centers, and companies like Google, Amazon and Facebook, it's easy to forget how much is built on open-source components, aka commodity software.  In a very real way open-source has enabled the huge explosion of commodity hardware, the fast growth of the internet itself, and now the further acceleration through cloud services, cloud infrastructure, and virtualization of data centers.

Your typical internet stack and application now stands on the shoulders of tens of thousands of open source developers and projects.  Let's look at a few of them.

1. Operating System - Linux

The commodity hardware craze would never have happened without the help of an open-source operating system to run on it.  Linux is an old story now, nonetheless everything else stands on it's shoulders.

2. Multi-purpose

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8 Questions to ask an AWS Expert
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If you're headhunting a cloud computing expert, specifically someone who knows Amazon Web Services (AWS) and EC2, you'll want to have a battery of questions to ask them to assess their knowledge.  As with any technical interview focus on concepts and big picture.  As the 37Signals folks like to say "hire for attitude, train for skill".  Absolutely!

1. Explain Elastic Block Storage?  What type of performance can you expect?  How do you back it up?  How do you improve performance?

EBS is a virtualized SAN or storage area network.  That means it is RAID storage to start with so it's redundant and fault tolerant.  If disks die in that RAID you don't lose data.  Great!  It is also virtualized, so you can provision and allocate storage, and attach it to your server with various API

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Resilient Services – Resilient Infrastructure – Site Reliability Engineer
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Modern internet infrastructure are complex.  Components and services are prone to failure.  Resiliency involves building redundancy, best practices and processes into your architecture to make you able to bend and not break.

  • Migrating to cloud service providers
  • Rearchitecting and refactoring applications to scale
  • Scaling the database tier - MySQL and Oracle
  • Building redundancy into every layer
  • Deploying object caches - memcache
  • Deploying page caches - varnish
  • Migrating to Innodb - transactional storage engine
  • Infrastructure design
  • Infrastructure automation
  • Disaster Recovery
  • Business Continuity with cloud deployments

Call or Skype us in New York City +1-212-533-6828

7 Ways to Troubleshoot MySQL
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MySQL databases are great work horses of the internet.  They back tons of modern websites, from blogs and checkout carts, to huge sites like Facebook.  But these technologies don't run themselves.  When you're faced with a system that is slowing down, you'll need the right tools to diagnose and troubleshoot the problem.  MySQL has a huge community following and that means scores of great tools for your toolbox. Here are 7 ways to troubleshoot MySQL.

1. Use innotop

Innotop is a great tool for MySQL which despite the name monitors MySQL generally as well as InnoDB usage.  It's fairly easy to install, just download the perl script. Be sure to include a [client] section to your local users .my.cnf file (you have one don't you?).  Inside that section, place one line with "user=xyz" and one line with "password=abc".

If you're concerned that

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MySQL Consulting – MySQL Services – MySQL Expert
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Call or SKYPE us in New York City: +1-212-533-6828

MySQL in the Cloud

  • Deploying MySQL in the Cloud
  • Cloud Security considerations for databases
  • Deploying in multiple Availability Zones
  • Deploying in multiple regions
  • Deploying MySQL with multi-az
  • Horizontal scalability in the cloud
  • MySQL spinup scripts
  • Deploying Amazon RDS
  • Evaluating RDS
  • Evaluating MySQL in the cloud
  • EBS Performance considerations
  • Tuning MySQL parameters in the cloud
  • Backup types & options
  • Mitigating against cloud server failure
  • Vertical scalability & MySQL on EC2

MySQL Consulting and Services

  • Backup & recovery
  • MySQL master master replication
  • MySQL replication & horizontal
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3 Ways to Boost Cloud Scalability
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Deploying in the Amazon cloud is touted as a great way to achieve high scalability while paying only for the computing power you use. How do you get the best scalability from the technology?

1. Use Auto-scaling

Auto-scaling is a unique feature of cloud computing and Amazon's EC2 offering. Setup a load balancer and a couple of webservers for your application as you normally would. Design your webserver based on a template AMI that you'll reuse over and over. Then setup auto-scaling and set thresholds based on the traffic you forecast. When a threshold is passed, AWS will spinup a new instance of your webserver, and roll it into the load balancer pool

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5 Ways to Boost MySQL Scalability
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There are a lot of scalability challenges we see with clients over and over. The list could easily include 20, 50 or even 100 items, but we shortened it down to the biggest five issues we see.

1. Tune those queries

By far the biggest bang for your buck is query optimization. Queries can be functionally correct and meet business requirements without being stress tested for high traffic and high load. This is why we often see clients with growing pains, and scalability challenges as their site becomes more popular. This also makes sense. It wouldn't necessarily be a good use of time to tune a query for some page off in a remote corner of your site, that didn't receive

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A review of Web Operations by John Allspaw and Jesse Robbins
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Web Operations

Web Operations. By John Allspaw and Jesse Robbins, O’Reilly 2010, with a chapter by myself. (Here’s a link to the publisher’s site).

I wrote a chapter for this book, and it’s now on shelves in bookstores near you. I got my dead-tree copy today and read everyone else’s contributions to it. It’s a good book. A group effort such as this one is necessarily going to have some differences in style and even overlapping content, but overall it works very well.

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Showing entries 1 to 18

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