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Spring Cloud Feign is a declarative service invocation client based on Netflix Feign implementation. It makes it easier to write Web service clients. We only need to create an interface and configure it with annotations to bind to the Web service interface. It has pluggable annotation support, including Feign annotations and JAX-RS annotations. ...

This is the push-flow on the mobile phone, and on the left is Apple's own browser. On the right is played using vlc Storage path of hls Talk about the whole implementation Combining Theory with Practice: Implementing a Simple Real-time Video Live Broadcasting Based on HTML5 The greatest contribution of this article is ...

Sequence diagram 1. NetworkWordCount 2. Initialize StreamingContext 3. Create InputDStream 4. Start Job Scheduler 1. NetworkWordCount package yk.streaming import org.apache.spark.SparkConf import org.apache.spark.storage.StorageLevel import org.apache.spark.streaming.{Seconds, StreamingContext} object NetworkWordCount { ...

Today, after the sale, the consulting customer bought the certificate. There was a 400 error in https request. Let me help you get it. Seeing that the customer's code seems to be no problem, I tried it myself, and there really is an exception. Record to avoid being pitted later. Scenario: Two-way validation of SL, requests nee ...

The error code is as follows Type Exception Report Message An invalid domain [127.0.0.1:8080] was specified for this cookie Description The server encountered an unexpected condition that prevented it from fulfilling the request. Exception java.lang.IllegalArgumentException: An invalid domain [127.0.0.1:8080] was specified ...

Spark textfile reads HDFS file partitions [compressed and uncompressed] sc.textFile("/blabla/{*.gz}") When we create spark context and use textfile to read files, what partition is it based on? What is the partition size? Compressed format of files File size and HDFS block size textfile will create a Hadoop RDD that uses ...

I. Environmental preparation CentOS 7 + Apache 2.4.6 + PHP +Mariadb5.5.60 Apache and Mariadb are installed directly by yum, and PHP is installed by binary source code.   Pre-installation preparation 1. System Update # Note Use Centos 7.5 for Minimizing Installation here yum -y install epel-release yum update -y 2. Inst ...

I/O Operation of Hadoop: Serialization (I) 1. serialization (1) Basic definitionsSerialization refers to the conversion of structured objects into byte streams for transmission over the network or permanent storage on disk; deserialization refers to the conversion of byte streams back to structured objects. (2) Applications ...

Summary DBUtils is a practical tool for database operation in Java programming. It is compact, simple and practical. DBUtils encapsulates the operation of JDBC, simplifies the operation of JDBC, and can write less code. Introduction to Three Core Functions of DBUtils API to provide operations on sql statements in Query Runner ResultSetHan ...

Incremental import Incremental import append for incremental columns # First import [root@node222 ~]# /usr/local/sqoop-1.4.7/bin/sqoop import --connect jdbc:mysql://192.168.0.200:3306/sakila?useSSL=false --table actor --where "actor_id < 50" --username sakila -P --num-mappers 1 --target-dir /tmp/hive/sqoop/actor_all ... 18/10/1 ...