Python Performance Tuning

In mailbox rapid expansion process, one of the performance problems is the MongoDB database level write lock, the time spent in the lock waiting process, directly reflects the user's use of the service process delay. To address this long-standing problem, we decided to migrate a common set of MongoDB (storing mail-related data) to a separate cluster. According to our inference, this will reduce the lock latency by 50%, and we can add more fragments, and we expect to be able to optimize and manage different types of data independently. We start from Mon ...

Recently, Airbnb machine learning infrastructure has been improved, making the cost of deploying new machine learning models into production environments much lower. For example, our ML Infra team built a common feature library that allows users to apply more high-quality, filtered, reusable features to their models.

These days, do not want to be a code of the musicians are not good Wenqing, small series can be counted at the disrupt New York Convention to see. 　　Once upon a time, I only know TC disrupt is the most vane-worthy entrepreneurial event in the American tech circle; What I didn't think of was that a science and technology conference could gather so many ' literary youth '. At this conference's hardware show (Hardware Alley), I saw a lot of hardware that was innovative across the border. Their founders are versatile: they can play guitar, speak French, and weave python ...

Summary: Lead: Cross-border hardware entrepreneurship! These days, do not want to be a code of the musicians are not good Wenqing, small series can be counted at the disrupt New York Convention to see. 　　Once upon a time, I only know that TC disrupt is the most valuable pioneering event in the American Science and Technology circle. Let me lead: ' Cross-border hardware entrepreneurship ' just way!   　　These days, do not want to be a code of the musicians are not good Wenqing, small series can be counted at the disrupt New York Convention to see. Once upon a time, I only know TC disrupt ...

In the past decade, there has been a surge in interest in machine learning. Almost every day, we can see discussions about machine learning in a variety of computer science courses, industry conferences, the Wall Street Journal, and more.

Summary: Lead: Cross-border hardware entrepreneurship! These days, do not want to be a code of the musicians are not good Wenqing, small series can be counted at the disrupt New York Convention to see. 　　Once upon a time, I only know that TC disrupt is the most valuable pioneering event in the American Science and Technology circle. Let me lead: ' Cross-border hardware entrepreneurship ' just way!   　　These days, do not want to be a code of the musicians are not good Wenqing, small series can be counted at the disrupt New York Convention to see. Once upon a time, I only know TC disrupt is American ...

Machine learning algorithm spicy, for small white I, the scissors are still messy, and I sort out some of the pictures that help me quickly understand. Machine Learning algorithm Subdivision-1. Many algorithms are a class of algorithms, and some algorithms are extended from other algorithms-2. From two aspects-2.1 learning methods supervised learning Common application scenarios such as classification problems and regression problems common algorithms include logistic regression (logistic regression) and reverse-transmission neural networks (back propagation neural netw ...

In the new field of Big data, BigTable database technology is well worth our attention because it was invented by Google, and Google is a well-established company that specializes in managing massive amounts of data. 　　If you know this well, your family is familiar with the two Apache database projects of Cassandra and HBase. Google first bigtable in a 2006 study. Interestingly, the report did not use BigTable as a database technology, but ...

Cassandra and HBase are the representatives of many open source projects based on bigtable technology that are implementing high scalability, flexibility, distributed, and wide-column data storage in different ways. In this new area of big data [note], the BigTable database technology is well worth our attention because it was invented by Google, and Google is a well-established company that specializes in managing massive amounts of data. If you know this very well, your family is familiar with the two of Cassandra and HBase.

From the Silicon Valley firm, to everyone's discussion of the bubble problem, how large data and artificial intelligence combined? What is the prospect of science and technology in the 2015? Dong Fei, a Coursera software engineer from Silicon Valley, sorted out the dry goods and various occasions in his recent Stanford public lectures to share with you. He has a hands-on experience, as well as a detailed analysis of some of the companies that have worked or studied in depth, such as Hadoop, Amazon, and LinkedIn. Dong Fei page Here, the mailbox is Dongfeiwww@gmail ....