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Easy site builders for specific markets. Weebly is a good, general-purpose site builder. But there are a lot of markets that could use more specialized tools. What's the best way to make a web site if you're a real estate agent, or a restaurant, or a lawyer? There still don't seem to be canonical answers. Obviously the way to build this is to write a flexible site builder, then write layers on top to produce different variants. Hint: The key to making a site builder for end-users is to make software that lets people with no design ability produce things that look good—or at least professional.

A primary objective of MHA is automating master failover and slave promotion within short (usually 10-30 seconds) downtime, without suffering from replication consistency problems, without spending money for lots of new servers, without performance penalty, without complexity (easy-to-install), and without changing existing deployments. MHA also provides a way for scheduled online master switch: changing currently running master to a new master safely, within a few seconds (normally 0.5-2 seconds) of downtime (blocking writes only).