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Displaying posts with tag: CTO/CIO (reset)
5 Things That Are Toxic to Scalability

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 the database cannot optimize …

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5 Tips for Better Database Change Management

Read the original article at 5 Tips for Better Database Change Management

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 database change management is popular as Migrations …

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Top 3 Questions From Clients

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 some tools are applied to the webserver tier, and the database tier to see where the bottleneck lies.  It may be in the network …

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Specialty Technology Consultant – New York Scalability Consultant – MySQL & EC2 Scalability

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 Distributions and Platforms
  • Strong Customer Facing Skills
  • Integrate Directly with Development Team
  • Agile …
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Open Source Enables the Cloud

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 Webserver - Apache

As of July …

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8 Questions to ask an AWS Expert

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 calls.  No calling the …

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5 Ways to Avoid EC2 Outages

1. Backup outside of the Cloud

Some of the high profile companies affected by Amazon's April 2011 outage could have recovered had they kept a backup of their entire site outside of the cloud.  With any hosting provider, managed traditional data center or cloud provider, alternate backups are always a good idea.  A MySQL logical backup and/or incremental backup can be copied regularly offsite or to an alternate cloud provider.  That's real insurance!

2. Use alternate regions and availability zones

Amazon's outage in April …

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MySQL Consulting – MySQL Services – MySQL Expert

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 scaling …
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3 Ways to Boost Cloud Scalability

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 automatically. Once traffic falls below the scale back threshold, Amazon will take a server out of the pool for you.

Be sure to monitor this …

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