Backtracking is a general algorithm for finding all solutions to some computational problems, notably constraint satisfaction problems, that incrementally builds candidates to the solutions, and abandons a candidate as soon as it determines that the candidate cannot possibly be completed to a valid solution

In the SQL database query language, window functions allow access to data in the records right before and after the current record. A window function defines a frame or window of rows with a given length around the current row, and performs a calculation across the set of data in the window

React is a JavaScript library for building user interfaces. It is maintained by Facebook and a community of individual developers and companies. React can be used as a base in the development of single-page or mobile applications

The fundamental structures of a software system and the discipline of creating such structures and systems. Each structure comprises software elements, relations among them, and properties of both elements and relations.[1] The architecture of a software system is a metaphor, analogous to the architecture of a building.[2] It functions as a blueprint for the system and the developing project, laying out the tasks necessary to be executed by the design teams.

Spark is a library for structured data processing. Unlike the basic Spark RDD API, the interfaces provided by Spark SQL provide Spark with more information about the structure of both the data and the computation being performed. Internally, Spark SQL uses this extra information to perform extra optimizations. There are several ways to interact with Spark SQL including SQL and the Dataset API. When computing a result the same execution engine is used, independent of which API/language you are using to express the computation. This unification means that developers can easily switch back and forth between different APIs based on which provides the most natural way to express a given transformation.

Statistics is a form of mathematical analysis that uses quantified models, representations and synopses for a given set of experimental data or real-life studies. Statistics studies methodologies to gather, review, analyze and draw conclusions from data

A recent book was published this year by Google about site reliability and security engineering, I would like to provide you a brief overview of it and incorporate my own analysis and thoughts about this subject while saving you some time from reading, at least part of it.

On-call, sometimes referred to as on-call shifts are processes used in business where employee work schedules are intentionally unpredictable. Employees who work on-call are expected to be available at any time during their shift, usually with short notice, to carry out their working duties. Depending on the nature of the profession, on-call duties may vary from what is expected during normal working hours to emergency cover only.

While there are a few types of sorting algorithms we have a few shared metrics to evaluate them all.  So when you refer me to a specific algorithm we could ask, is this sorting algorithm stable? Is it sorting in place? What is the average worst and best case running time of this sorting algorithm? Which type of data is this sorting algorithm best suited for, how much memory does this sorting algorithm require and does it need actually extra memory?

“The Little Manual of API Design” is a very nice paper written by Jasmin Blanchette has released a paper while working in trolltech, which is a Nokia company. I found it to be very clear and concise, and reassuring what we think of API design. It’s a difficult task that includes both artistic, social, programming and scientific skills. We are going to summarize this paper for you.