Read the original article at Make MySQL clustering work for you

We’ve told you all about MySQL mult-master replication’s limitations. If you write to two masters it is bound to fail for myriad reasons. Now what? Do what the pros do that’s what. A. Don’t write to both masters Using multi-master replication works great as long as you do so in active-passive mode. Never write to [...]

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1. Limitations of MySQL row-based replication
2. No tools to reconcile MySQL with two masters
3. 5 Ways to fortify MySQL replication
4. MySQL needs single master to check data integrity
5. MySQL Cluster In The Cloud – Managers Guide

Read the original article at No tools to reconcile MySQL with two masters

Here’s the last nail in the coffin. We hope this convinces you not to write to multiple masters with MySQL replication. Reason 10 – No tools to reconcile inconsistent masters For all the endless reasons we’ve already outlined MySQL replication is prone to failure. We know it’s going to happen, you now know too. When [...]

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1. Transaction isolation breaks when writing two masters
2. MySQL requires an authoritative master to build slaves
3. MySQL needs single master to check data integrity
4. Limitations of MySQL row-based replication
5. Crashed nodes corrupt your MySQL cluster

Read the original article at Temp tables can break replication

If you’re not convinced yet that writing to dual masters is a bad idea, we have a couple more reasons. 9. Temp tables break replication after restart MySQL’s replication is sensitive to temporary tables. You shouldn’t use them. If your queries create them to work against, and a node crashes, the temp tables will be [...]

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1. Why does MySQL replication fail?
2. Active-active replication reduces operational flexibility
3. 5 Ways to fortify MySQL replication
4. Crashed nodes corrupt your MySQL cluster
5. Bulletproofing MySQL replication with checksums

Read the original article at Crashed nodes corrupt your MySQL cluster

Writing to two masters is like walking around with a loaded shotgun. Eventually one of your instances will fail and when it does, replications position & synchronization information could easily become corrupt! Reason 8 – Crashed nodes cause big problems MySQL instances, unfortunately can crash. When that happens, they don’t always sync the replication position [...]

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1. MySQL Cluster In The Cloud – Managers Guide
2. Active-active replication reduces operational flexibility
3. Why does MySQL replication fail?
4. MySQL requires an authoritative master to build slaves
5. MySQL needs single master to check data integrity

Read the original article at Transaction isolation breaks when writing two masters

Continuing our discussion of multi-master replication, we hit on five more reasons why writing to two masters aka active-active replication is very dangerous. Click through to the end for multi-master solutions that work with MySQL. Reason 6 – You lose transaction isolation This may sound like a theoretical point to some. But hopefully we can [...]

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1. MySQL needs single master to check data integrity
2. MySQL requires an authoritative master to build slaves
3. Why does MySQL replication fail?
4. Active-active replication reduces operational flexibility
5. Limitations of MySQL row-based replication

Read the original article at Active-active replication reduces operational flexibility

Among the myriad data integrity and corruption risks associated with active-active replication, you also lose out on configurability and operational flexibility. Reason 7 – Can’t add nodes easily The often touted solution to use auto_increment_increment and auto_increment_offset fixes you to a given setup forever. You can set it up with a discrete two nodes, all [...]

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1. 10 reaons active-active is hard and how to solve it
2. Why does MySQL replication fail?
3. Limitations of MySQL row-based replication
4. MySQL needs single master to check data integrity
5. MySQL Cluster In The Cloud – Managers Guide

Read the original article at How to make MySQL multi-master work for you

Coming soon! Want more? Grab our Scalable Startups monthly for more tips and special content. Here’s a sample Related posts:Transaction isolation breaks when writing two masters MySQL requires an authoritative master to build slaves MySQL needs single master to check data integrity A master isn’t born but made Why does MySQL replication fail?

For more articles like these go to Sean Hull's Scalable Startups

1. Transaction isolation breaks when writing two masters
2. MySQL requires an authoritative master to build slaves
3. MySQL needs single master to check data integrity
4. A master isn’t born but made
5. Why does MySQL replication fail?

Read the original article at MySQL needs single master to check data integrity

MySQL slaves can drift out of sync. Many of our clients are surprised to find some data differences in their replication topology, once we do some checking and sniffing around. Such checks require a single reliable or authoritative master to compare against. Click through to the end for multi-master solutions that work with MySQL. Reason [...]

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1. MySQL requires an authoritative master to build slaves
2. Big Data – What is it and why is it important?
3. Why does MySQL replication fail?
4. Limitations of MySQL row-based replication
5. Database Replication – What is it and why is it important?

Read the original article at MySQL requires an authoritative master to build slaves

In MySQL database operations, you often need to rebuild slaves. They fail for a lot of different reasons, fall out of sync or crash. When this happens you may find you need to reclone and start fresh. This is normally done by finding your authoritative master database, and doing a hotbackup. Click through to the [...]

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1. Limitations of MySQL row-based replication
2. Why does MySQL replication fail?
3. 10 reaons active-active is hard and how to solve it
4. RDS or MySQL – Ten Use Cases
5. MySQL Cluster In The Cloud – Managers Guide

Read the original article at Limitations of MySQL row-based replication

MySQL offers a few different options for how you perform replication. Statement-based has been around a lot longer, and though it has some troublesome characteristics they’re known well and can be managed. What’s more it supports online schema changes with multi-master active-passive setup. We recommend this solution. Row-based replication is newer. It attempts to address [...]

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1. Why does MySQL replication fail?
2. 5 Ways to fortify MySQL replication
3. Bulletproofing MySQL replication with checksums
4. Database Replication – What is it and why is it important?
5. Easy MySQL replication with hotbackups

Read the original article at Why does MySQL replication fail?

When considering active-active multi-master, you must consider it’s foundation technology. Although MySQL replication is straightforward to setup, it can fail in a myriad of ways. Most of those are known and well understood. We can solve them only if we use the technology in the standard way. Click through to the end for multi-master solutions [...]

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1. 5 Ways to fortify MySQL replication
2. Easy MySQL replication with hotbackups
3. Bulletproofing MySQL replication with checksums
4. Database Replication – What is it and why is it important?
5. RDS or MySQL – Ten Use Cases

Read the original article at Why your cloud is speeding for a scalability cliff

Also find Sean Hull’s ramblings on twitter @hullsean. Don’t believe me that you’re headed for the cliff? A startup scales up to no avail Towards the end of 2012 I worked with an internet startup in the online education space. Their web application was not unusual, built in PHP and using Linux, Apache & Mysql [...]

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1. 3 Ways to Boost Cloud Scalability
2. Cloud Operations Interview
3. Your Database – A Long-Haul Truck Or A Sports Car?
4. 5 Tips for Scalability
5. Cloud Deployment Interview

Read the original article at Why do people leave consulting?

As a long time freelancer, it’s a question that’s intrigued me for some time. I do have some theories… First, definitions… I’m not talking about working for a large consulting firm. Although this role may be called “consultant”, my meaning is consultant as sole proprietor, entrepreneur, gun for hire or lone wolf. 1. Make more [...]

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1. Consulting essentials: Getting the business
2. Consulting essentials: Building your business
3. Hiring is a numbers game
4. MySQL Consulting in New York
5. Database Heavy Lifting – Consulting and Professional Services

Read the original article at Why you should attend Percona Live 2012

What I loved about Percona Live 2011 Last year I was excited to go to Percona Live for the first time in NYC. I arrived just in time to hear Harrison Fisk from Facebook speak about some of the awesome tweaks they’re running with MySQL there. It’s not everyday that you get to hear from [...]

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Read the original article at Upcoming for Scalable Startups

Just back from the Labor Day holiday, and ready to dive back in. I thought this would be a great time to outline some of our upcoming topics so here goes… 1. Why Oracle usability sucks - a rant about Oracle’s weak points In the meantime take a peek at our piece on why we [...]

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1. How To Build Highly Scalable Web Applications For The Cloud
2. Scalability Rules for managers and startups
3. Object Relational Mapper – What is it and why is it important?
4. Karma – Oracle Database Monitoring

Read the original article at Ask Me Questions – Scalability, Performance, Cloud Computing

    I blog a lot about various topics near and dear to me.  So I thought I’d turn the tables a bit, and offer the microphone up to readers.  Do you have questions on any of these topics?  Feel free to drop a note in the comments.   Business & Consulting Are you a [...]

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1. The New Commodity Hardware Craze aka Cloud Computing
2. 3 Ways to Boost Cloud Scalability
3. Cloud Computing – What is it and why is it important?
4. The market for Cloud Computing
5. Cloud Computing – Disciplined Deployments

Read the original article at Scalability Rules for managers and startups

Abbott and Fisher’s previous book, The Art of Scalability received good reviews for shifting the way we think about scalability from merely splitting databases and adding servers, to include the human factors that weigh heavily on its success. Together with the authors’ distinguished pedigree (PayPal, Amazon, and eBay between them), I picked up a copy [...]

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1. Scalability – What is it and why is it important?
2. MySQL Cluster In The Cloud – Managers Guide
3. 5 things toxic to scalability
4. Open Insights 04 – Managers: Databases 101
5. 5 Tips for Scalability

Read the original article at Book Review – Effective MySQL

Effective MySQL: Optimizing SQL Statements by Ronald Bradford No Nonsense, Readable, Practical, and Compact I like that this book is small; 150 pages means you can carry it easily.  It’s also very no nonsense.  It does not dig too deeply into theory unless it directly relates to your day-to-day needs.  And those needs probably cluster [...]

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1. 3 Biggest MySQL Migration Surprises
2. 5 Ways to Boost MySQL Scalability
3. Book Review – Rework
4. Book Review – Help! by Oliver Burkeman
5. Migration to MySQL – What is it and why is it important?

Read the original article at 5 Tips to Cache Websites and Boost Speed

Often when we think about speeding up and scaling, we focus on the application layer itself.  We look at the webserver tier, and database tier, and optimize the most resource intensive pages. There’s much more we can do to speed things up, if we only turn over the right stones.  Whether you’re using WordPress or [...]

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1. Caching – What is it and why is it important?
2. 3 Ways to Boost Cloud Scalability
3. 5 Tips for Scalability
4. Top 3 Questions From Clients
5. 5 Ways to Boost MySQL Scalability

Read the original article at Why generalists are better at scaling the web

Recently at Surge 2011, the annual  conference on scalability  and performance, Google’s CIO Ben Fried gave an illuminating keynote address. His main insight was that generalists are the people that will lead engineering teams in successfully scaling the web. In a world where the badge of Specialist or Expert is prized, this was refreshing perspective from [...]

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1. Auto-scaling – What is it and why is it important?
2. Infrastructure Provisioning – What is it and why is it important?

Read the original article at iHeavy Newsletter 84 – Restaurant Scalability

Restaurant Scalability Could pro-waitering serve up some lessons on web scalability? Observing peak hour dining at a New York restaurant gave us some insight. I was dining at a restaurant the other day with friends. It was a warm and cozy place, nicely decorated with a long, narrow dining room.  The food was scrumptious, yet we were [...]

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1. Web Cornerstone – iHeavy Insights Newsletter 80
2. iHeavy Insights 75 – Recognizing Quality
3. iHeavy Insights 64 – What You Value
4. iHeavy Insights 78 – Degrade Gracefully
5. 5 Scalability Pitfalls to Avoid

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 [...]

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1. Agile – What is it and why is it important?
2. 5 things toxic to scalability
3. iHeavy Insights 76 – Scale By Design
4. 5 Tips for Scalability
5. 3 Ways to Boost Cloud Scalability

Read the original article at 5 things toxic to scalability

If you’re using MySQL checkout 5 ways to boost MySQL scalability. 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 [...]

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1. Performance Metrics – What are they and why are they important?
2. iHeavy Insights 81 – Web Performance Metrics
3. Feature Flags – What are they and why are they important?
4. Object Relational Mapper – What is it and why is it important?
5. 5 Ways to Boost MySQL Scalability

Read the original article at 5 Scalability Pitfalls to Avoid

1. Object Relational Mappers Software development has always made use of libraries, off-the-shelf components that are shared between different projects.  These allow you to stand on the shoulders of others and build bigger things.  Frameworks do the same thing, they provide a context from which to build on.  Ruby on Rails for example provides a [...]

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1. 5 Ways to Avoid EC2 Outages
2. 5 Tips for Scalability
3. Scalability – What is it and why is it important?
4. 3 Ways to Boost Cloud Scalability

Read the original article at 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 [...]

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1. Backups – What are they and why are they important?
2. Business Continuity Planning – What is it and why is it important?