Can't open and lock privilege tables: Table 'mysql.user' doesn't exist - Trying to run second instance of myslq 

mysqld --initialize --console

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Using NPM behind proxy

Config NPM behind proxy by config  and proxy or https-proxy : npm config set proxy http://proxy.company.com:8080 npm config set https-proxy http://proxy.company.com:8080 If you want to specify the credential, they can passed by the following URL syntax: http:// username:password @proxy.company.com:8080
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10 Tips for Proper Application Logging

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Reference: https://www.javacodegeeks.com/2011/01/10-tips-proper-application-logging.html   Our latest   JCP partner ,   Tomasz Nurkiewicz , has submitted a number of posts describing the basic principles of proper application   logging . I found them quite interesting, thus I decided to aggregate them in a more compact format and present them to you. So, here are his suggestions for clean and helpful logs:(NOTE: The original posts have been slightly edited to improve readability) 1) Use the appropriate tools for the job Many programmers seem to forget how important is logging an application’s behavior and its current activity. When somebody puts: 1 log.info( "Happy and carefree logging" ); happily somewhere in the code, he probably doesn’t realize the importance of application logs during maintenance, tuning and failure identification. Underestimating the value of good logs is a terrible mistake. In my opinion, SLF4J is the best logging API availab...
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MS SQL Server: EXECUTE permission denied on xp_sqljdbc_xa_init_ex

When attempting to start the system using MS SQL Server 2008 R2 you get an exception like: javax.transaction.xa.XAException: com.microsoft.sqlserver.jdbc_SQLServerException: failed to create the XA control connection. Error: "The EXECUTE permission was denied on the object 'xp_sqljdbc_xa_init_ex', database 'master' schema 'dbo' To fix the problem you should add user for master database with SqlJDBCXAUser permission. or you may execute the following command (also need to grant right first) EXEC sp_addrolemember [SqlJDBCXAUser], 'username'
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