Snuba data model is horizontally divided into logical model and physical model. The logical data model is visible to the Snuba client through the Snuba...
The most important thing in college should be to train the ability of self-study and cultivate the spirit of self-discipline. After work, the most important...
In the workplace, almost everyone has to work with Excel. Work report form, project progress form, sales performance form, data analysis form...... Excel is used...
1. Event Description: Parses the contract content and sends the result back to Hive for visualization. This event involves the following steps, and the third...
Kafka is often used in work, but kafka file storage mechanism is not very understanding, this author on kafka file storage mechanism related content review...
Elasticsearch is a Restful full-text search engine based on Lucene. Each field is indexed and searchable, and you can quickly store, search, and analyze massive...
Data is scattered in the data stores used by various departments of the enterprise, and there are complex business connections between them. The whole is...
In a product matrix business, you can quickly discover growth problems through the dashboard. However, how to quickly understand the reasons behind a problem is...
Elasticsearch is a distributed open source search engine for all types of data, including text, digital, geospatial, structured and unstructured data. Elasticsearch Java client: Transpor...
Mathematics is like an octopus. It has tentacles that can touch almost every subject. Although most people have systematic learning in school, they just use...
Small knowledge, big challenge! This article is participating in the creation activity of "Essential Tips for Programmers". Return the third flatMap in Chapter 2: From...
Basic concepts Streaming query refers to the fact that a successful query returns not a collection but an iterator, from which the application takes one...
Abstract: CDL is a simple and efficient real-time Data integration service. It can capture Data Change events from various OLTP databases, push them to Kafka,...
What is the Real Internet? What does the virtual-real world look like? What does cloud native and micro-low code mean? What are the opportunities and...
This article describes the usage of the conversion algorithm in Spark, and illustrates the usage of these operators through the function signature, function literal explanation,...
Apache Druid is an analytical data platform that combines the features of a time series database, data warehouse, and full-text retrieval system. This article takes...
MapReduce is Hadoop's solution to large-scale distributed computing. MapReduce is both a programming model and a computing framework. That is, developers must develop programs based...
In the previous section on Spark's classic word statistics, you learned about several RDD operations, including flatMap, Map, reduceByKey, and the later simplified scheme, countByValue....
More excellent articles. Recently, an interesting young colleague came on board and submitted lots and lots of code. When you look at the git record,...
Next, I will study the music recommendation system, which needs data to demonstrate the algorithm and engineering code, and then summarize the open source music...
More and more companies are experimenting with ABTest, either by building their own systems or relying on third-party systems. So what are the basics that...