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Tag: master

React-native – RnFetchBlob requires the main queue settings

When using RNFetchBlob with React Native, I see a yellow warning screen:

Module RNFetchBlob requires main queue setup since it overrides
constantsToExport but doesn’t implement requiresMainQ

October 20, 2021By Simo React master, Native, need, queue, React, rnfetchblob, setupLeave a Comment

CentOS6.7 installation deployment Nginx (detailed primary configuration file)

keepalived + nginx : Realize high availability

nginx:

web server

reverse proxy, also supports caching(Cached on disk)

Support FastCGI

tengine: Taobao official corrects

October 14, 2021By Simo Centos centos, CentOS6.7, configuration file, deployment, detailed, installation, master, nginxLeave a Comment

MySQL main configuration

1.vim /etc/my.cnf

[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=

October 4, 2021By Simo Mysql configuration, Main, master, mysqlLeave a Comment

New Cassandra Cluster – The pit to be filled with immediately

Role-based authenticationThe business cluster is configured to enable role-based authentication by performing the following steps. The configuration steps are as follows:

Modify the authoriza

October 1, 2021By Simo Load Balance Cassandra, cluster, filling, master, New, pit, ToLeave a Comment

Haproxy and MySQL Master-Master replication speed is extremely slow

I have two MySQL servers in multi-master mode with HAproxy machines for simple load balancing/redundancy. When I connect directly to one of the servers and try to update approximately At 100,000 en

September 30, 2021By Simo Load Balance Copy, Haproxy, Hole, master, mysql, slow, speedLeave a Comment

Amazon-EC2 – SparkException: Master Deletes our app

I know that there are other very similar questions on Stackoverflow, but these questions are either not answered or did not help me. In contrast to these questions, I will add more stack traces and

September 28, 2021By Simo Silicon Valley Amazon, application, delete, EC, EC2, master, program, SparkException, WeLeave a Comment

SQLite – How to get the primary key column name for a given table?

All I know is the name of the table and the id value of the query I want to execute, but I don’t know what id is called in the table. You can use the answer to a quite similar question to find t

September 22, 2021By Simo Sqlite column name, given, how to get, key, master, SQLITE, tableLeave a Comment
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