SpringBoot 2.x Integrated Redis (different uses of String Template and redisTemplate)

1. Introduction to Redis Redis database is a fully open source, free, high-performance Key-Value database. It supports five value types of storage, including string (string), list (linked list), set (set), zset(sorted set - ordered set) and hash (hash type). Redis is very fast. It can perform about 110,000 SET operations p ...

Posted on Thu, 20 Dec 2018 00:33:05 -0800 by sglane

Scaffolding Template on Asp.Net Core Razor Page

Scaffolding Template Intro We know that in Asp.Net MVC, if you use EF's DBC ontext, you can add controllers containing views through the right-click solution-add controllers-add controllers in vs, and then vs will automatically generate the corresponding CURD controllers and views according to the Model you choose. This is called ASP.NET Scaffo ...

Posted on Wed, 19 Dec 2018 22:33:05 -0800 by Liam-PHP

A Note on ORA-00600-[kcratr_nab_less_than_odr]

In the morning, my buddies came to ask for help and said that an ETL database could not be started. There was an ORA-00600 error. Several internal errors of ORA-00600 have been encountered before, which are caused by abnormal power failure of database server. These errors are usually caused by internal bug s of oracle i ...

Posted on Wed, 19 Dec 2018 18:00:05 -0800 by sp2hari

HTAP database PostgreSQL scenario and performance test 43 - (OLTP+OLAP) unlogged table contains indexed multi-table batch writing

Label PostgreSQL, HTAP, OLTP, OLAP, Scenario and Performance Testing background PostgreSQL is a database with a long history, which can be traced back to 1973. It was first awarded by the 2014 Computer Turing Prize winner and the originator of relational database. Michael_Stonebraker PostgreSQL has similar functions, performance, architectur ...

Posted on Wed, 19 Dec 2018 05:03:04 -0800 by bdeonline

Android ListView, AsyncTask, GridView, CardView, Local Data Storage, SQLite Database

Copyright Statement: No Reprint without Blogger's Permission supplement In addition to the previous section, ListView is used to display list items. Using ListView requires two xml files, one is the list layout, and the other is the layout of a single list item. If we want to display all app list items in the system, we need the left app ima ...

Posted on Wed, 19 Dec 2018 01:48:04 -0800 by ixos

Preparations for installation of Oracle 11gR2 under suse linux 11sp1 and basic settings for completion of installation

Installation of oracle Database Detection and Completion of RPM Packets Required binutils-2.19,gcc-4.3,gcc-c++-4.3,glibc-2.9,glibc-devel-2.9,ksh-93t,libstdc++33-3.3.3,libstdc++43-4.3.3_20081022,libstdc++43-devel-4.3.3_20081022,libaio-0.3.104,libaio-devel-0.3.104,libgcc43-4.3.3_20081022,libstdc++-devel-4.3,make-3.81,sysstat-8.1.5 You can use ...

Posted on Tue, 18 Dec 2018 23:45:04 -0800 by habib009pk

Android Architecture Components Part2:LiveData

Thank you for coming again. Welcome to the Android Architecture Components (ACC) series. In the last article, we discussed Room, through which we can easily manipulate App's database. If your App relies on local databases, Room is worth having. Today, this article continues with the steps of the previous article. Let's take ...

Posted on Tue, 18 Dec 2018 23:30:04 -0800 by shwanky

The four standard uses of @GeneratedValue are TABLE,SEQUENCE,IDENTITY,AUTO.

I. JPA General Policy Generator Hibernate entities are mapped by annotation. The annotation-based hibernate primary key is identified as @Id. Its generation rules are set by @GeneratedValue. Here @id and @GeneratedValue are standard uses of JPA. JPA provides four standard uses, as can be seen from the source code of @GeneratedValue. @Ta ...

Posted on Tue, 18 Dec 2018 13:54:04 -0800 by thinguy

Oracle Case 09 - ORA-12154: TNS: could not resolve the connection identifier specified

DG still handles a lot of problems, but this time encounter a more exotic thing, surface configuration, network is not a problem, but the synchronization of backup always has problems, after many adjustments of parameters, redeployment problems are still the same, and ultimately the mos problem was solved. Now the processing process is recorded ...

Posted on Tue, 18 Dec 2018 13:51:04 -0800 by StateGuy

Why does ALTER TABLE need internal Plan lock in Db2?

In Db2 routine operation and maintenance, it is sometimes found that ALTER TABLE operation fails due to lock timeout. If you look at the lock situation before the lock timeout, you may see that it needs X-type internal plan lock. Other applications have held the lock in S mode. The incompatibility of the two results in ALTER TABLE lock and so o ...

Posted on Tue, 18 Dec 2018 10:39:04 -0800 by Magena Cadmar