Flink series of articles 1. Flink column The Flink column systematically introduces a certain knowledge point and explains it with specific examples. 1. Flink deployment series This section introduces the basic content related to the deployment and configuration of Flink. 2. Flink basic series This part introduces the basic parts of Flink, such as terminology, […]
Tag: stream
Use the Stream stream to convert the obtained object List＜Object＞form data into Map＜Grouping conditions, quantity statistics＞form
For example, the current business needs to group the obtained data, and then use another method to process the data. The methods used are Collectors.groupingBy, Collectors.counting(), Collectors.reducing(). Then, take the following example as an example to collect the obtained lists and group the obtained data by gender, with gender as K and the number of […]
“Amazon Cloud Technology Product Review” event call for papers｜Building a streaming media server with “weak” image processing functions
Authorization statement: This article authorizes the official Amazon Cloud Technology article to forward and rewrite the rights, including but not limited to Amazon Cloud Technology official channels such as Developer Centre, Zhihu, self-media platforms, third-party developer media, etc. This article is based on the following software and hardware tools: +awsec2 + frp-0.52.3 + mediamtx-1.3.0 + […]
spring-cloud-stream
Directory of series articles Chapter 1 Application of Java Thread Pool Technology Chapter 2 Application of CountDownLatch and Semaphone Chapter 3 Introduction to Spring Cloud Chapter 4 Spring Cloud Netflix-Eureka Chapter 5 Spring Cloud Netflix Ribbon Chapter 6 OpenFeign of Spring Cloud Chapter 7 GateWay of Spring Cloud Chapter 8 Hystrix of Spring Cloud Netflix […]
shell – regular expression, sed streaming editor
Regular Expressions Overview Overview Use a “string of symbols” to describe data with common attributes Basic regular list Extended regular list Prepare materials [root@localhost ~]# head -5 /etc/passwd > user [root@localhost ~]# cat user root:x:0:0:root:/root:/bin/bash bin:x:1:1:bin:/bin:/sbin/nologin daemon:x:2:2:daemon:/sbin:/sbin/nologin adm:x:3:4:adm:/var/adm:/sbin/nologin lp:x:4:7:lp:/var/spool/lpd:/sbin/nologin Test ^ $ [root@localhost ~]# grep root user root:x:0:0:root:/root:/bin/bash [root@localhost ~]# grep ^root user root:x:0:0:root:/root:/bin/bash [root@localhost […]
Design and implementation of streamlined blog system developed based on Springboot
Table of Contents Preface 1. Technology stack 2. Introduction to system functions Personal Center Administrator management User Management Basic data management Blog information management Blog comment management Blog collection management Forum management Announcement information management Carousel image management 3. Core code 1. Login module 2. File upload module 3. Code encapsulation Foreword At present, we […]
[C++] IO stream in C++
Article directory 1. Input and output of C language 2. What is flow? 3. C++ IO stream 1.C++ standard IO stream 2.C++ file IO stream 4. A brief introduction to stringstream 1. Input and output of C language The most frequently used input and output methods in C language are scanf () and printf (): […]
[Java] I/O stream-File class: comprehensive analysis from 0 to 1
Column【Java】 Quote of the day: When you can’t see the future clearly, persist longer than others. ?Welcome and thank you all for pointing out my questions. Table of Contents 1.File Overview 2.File construction method (1). Create a file object based on the file path (2).Create objects based on parent pathname string and child pathname string […]
Stream stream + immutable collection
Immutable collection Create an immutable collection: data cannot be modified and defensively copied to the immutable collection; safe when called by an untrusted library. There are static methods of in the List Set Map interface->Get an immutable collection–>Cannot add, delete, modify (read-only) List<String> list = List.of(“”,””,””); //remove add set xxx is not allowed Set<String> set […]
Android audio and video–H.264 video stream decoding
1 Introduction H.264 is a digital video compression format used by many developers. It is mainly used for the transmission of live streaming and video streaming on video websites. Many developers have also begun to use H.265 for video compression, which has better performance. H.264 has a big improvement. This article focuses on the implementation […]