Useful tips for everyday
What is event consistency? Eventual consistency is a consistency model used in distributed computing to achieve high availability that informally guarantees that, if no new…
What tech stack does Twitter use? We use a few cache technologies, like Redis and Twemcache, at enormous scale. More specifically, we have a mix…
How do I screenshot a specific area on iPad? Press and hold the Top button and immediately click the Volume Up button, then release both…
Can Facebook likes be hidden? You can now hide like counts on Instagram and Facebook. After years of testing on both platforms, Facebook and Instagram…
What is a statistically significant F ratio? The F ratio is the ratio of two mean square values. If the null hypothesis is true, you…
Which query is used to modify data? Action Query: Action queries change your data based on some set of criteria. Action queries can delete records,…
What are the parameters for serial.print ( )? An optional second parameter specifies the base (format) to use; permitted values are BIN (binary, or base…
Why do we collect data to find patterns? We often collect data so that we can find patterns in the data, like numbers trending upwards…
How do I setup an IP camera on my network? Network configuration Connect the network camera to your Local Area Network (LAN). A LAN is…
How do you calculate unbiased point estimate? Bias: The difference between the expected value of the estimator and the true value of θ, i.e. When…