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10 Common Mistakes Java Developers Make when Writing SQL
1. Forgetting about NULL
2. Processing data in Java memory
3. Using UNION instead of UNION ALL
4. Using JDBC Pagination to paginate large results
5. Joining data in Java memory
6. Using DISTINCT or UNION to remove duplicates from an accidental cartesian product
7. Not using the MERGE statement
8. Using aggregate functions instead of window functions
9. Using in-memory sorting for sort indirections
10. Inserting lots of records one by one
jdbc  java  sql  databases  lib  orm  jooq  performance  optimization  articles  documentation  code  programming  howto 
yesterday by oscar-lopez
Documentation for the MariaDB Connector/J driver
The MariaDB driver is recommended for connecting to Aurora, because it correctly handles fail overs. It has some gotchas to be aware, though:

- We must set socketTimeout=0 in the connection URL
- Only the cluster endpoint is recognized as a valid connection URL
jdbc  java  sql  databases  lib  orm  performance  optimization  work  amazon  documentation  code  programming  howto  aurora  mysql 
yesterday by oscar-lopez
What you Didn’t Know About JDBC Batch
The ultimate reference for inserting efficiently using batches with jOOQ and MySQL/Aurora. Yes, we still need to do INSERT ... VALUES with multiple rows, but the key point here is that we must enable rewriteBatchedStatements=true in the connection string for this to work!
jooq  java  sql  databases  lib  orm  performance  optimization  work  amazon  documentation  code  programming  howto  aurora  mysql 
yesterday by oscar-lopez
Determining Which DLLs to Redistribute | Microsoft Docs
When you build an application that uses library DLLs supplied by Visual Studio, users of your application must also have those DLLs on their computers for the application to run. Because most users probably do not have Visual Studio installed, you must provide these DLLs for them. Visual Studio makes these DLLs available as redistributable files that you can include in your application installer.
VisualStudio  VisualStudio2019  VisualC++  DLLs  redistributable  install  Installer  Documentation  OfficialSite  Microsoft  2019 
2 days ago by dlb
Introduction to JShell
The Java Shell tool (JShell) is an interactive tool for learning the Java programming language and prototyping Java code. JShell is a Read-Evaluate-Print Loop (REPL), which evaluates declarations, statements, and expressions as they are entered and immediately shows the results. The tool is run from the command line.
java  jdk-13  java-se-13  oracle  jshell  documentation 
3 days ago by markav
Control Docker with systemd | Docker Documentation
Many Linux distributions use systemd to start the Docker daemon. This document shows a few examples of how to customize Docker’s settings.
docker  systemd  configuration  sysadmin  example  tips  reference  documentation  guide  howto  booting 
3 days ago by ezequiel
Grub2 - Community Help Wiki
GRUB 2 is the default boot loader and manager for Ubuntu since version 9.10 (Karmic Koala). As the computer starts, GRUB 2 either presents a menu and awaits user input or automatically transfers control to an operating system kernel. GRUB 2 is a descendant of GRUB (GRand Unified Bootloader). It has been completely rewritten to provide the user significantly increased flexibility and performance. GRUB 2 is Free Software.
grub  linux  ubuntu  wikientry  links  documentation  reference  guide  tips  sysadmin  harddisk  booting  howto  info 
3 days ago by ezequiel

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