Database Reliability Engineering Designing and Operating by Laine Campbell, Charity Majors

By Laine Campbell, Charity Majors

If you’re an IT expert trying to expand your wisdom of database management, this sensible ebook takes you thru each one component to website reliability and operations in the context of database engines. IT staffers with minimum database operations adventure can use this data as a beginning of the structure and operations inside a particular database. This e-book makes use of open-source engines similar to MySQL, PostgreSQL, MongoDB, and Cassandra as examples all through.

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This includes stack traces! Additionally, there are numerous events that will occur that are incredibly useful to register with opviz: • Code deployments • Deployment time • Deployment errors Application monitoring is a crucial first step, providing realistic looks at behavior from the user perspective, and is directly related to latency SLOs. These are the symptoms providing clues into faults and degradations within the environment. Now, let’s look at the sup‐ 40 | Chapter 2: Operational Visibility porting data that can help with root cause analysis and provisioning: host data.

These functions do create more value, but it is important to remember that they are derived data, and that the raw data is just as critical. If you’re tracking means per minute, but do not have the underlying data, you won’t be able to create means on larger windows such as hours or days. • • • • • • • • Count Sum Average Median Percentiles Standard Deviation Rates of Change Distributions Visualizing Distributions Visualizing a distribution is an very valuable to look at the kind of data that is often generated in web architec‐ tures.

Tickets/Tasks When work must be done, but there is not an imminent disaster, the output of monitoring should be tickets/tasks that go in engineer queues for work. Notifications Sometimes you just want to record that an event has occurred to help create context for folks. For instance, when code deploy events are registered. Notifications will often go to a chat room, or a wiki or collaboration tool to make it visible without interrupting workflow. Automation There are times when data, particularly utilization data, advises of the need for more or less capacity.

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