High Availability with MongoDB for Fun and Profit

High Availability with MongoDB for Fun and Profit Greg Brockman Stripe @thegdb // gdb@stripe.com

IntroTips & TricksBest Practices Questions @thegdb // gdb@stripe.com

Replica Set Crash Course PRIMARY SECONDARY SECONDARY @thegdb // gdb@stripe.com

Live Demo!@thegdb // gdb@stripe.com

Start a cluster@thegdb // gdb@stripe.com

Naively: zz @thegdb // gdb@stripe.com

With retries:@thegdb // gdb@stripe.com

All the (hard) problems are solved @thegdb // gdb@stripe.com

Tips & Tricks @thegdb // gdb@stripe.com

If at first you dont succeed... @thegdb // gdb@stripe.com

Rebuild all the things! @thegdb // gdb@stripe.com

Force initial syncs from secondaries primary newnode # HACK newnode> iptables -I OUTPUT -j DROP -d primary @thegdb // gdb@stripe.com

IPs vs Hostnames @thegdb // gdb@stripe.com

Zero-downtime migrations Background index buildsObject versioning Avoid multi-updates @thegdb // gdb@stripe.com

Best Practices @thegdb // gdb@stripe.com

Always rehearse your exact administration procedure @thegdb // gdb@stripe.com

Be skeptical@thegdb // gdb@stripe.com

Read the issues `@thegdb // gdb@stripe.com

Understand the guarantees youre getting * @thegdb // gdb@stripe.com

Questions@thegdb // gdb@stripe.com

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