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This article is reproduced from: https://mp.weixin.qq.com/s/K-wCUUztBxjGSlv2M5UA1Q This paper is mainly used to record the comparison of three batch insertion methods, so as to facilitate the selection according to the actual situation in the follow-up work The database uses SQL server, JDK version 1.8, and runs in the SpringBoot environment. ...

======================================================================= []( )2-1. Three treatment methods []( )2-1-1. Single loop insertion We take 10w pieces of data for some tests. If the insertion method is program traversal loop, insert one by one. It is detected that the speed of inserting a message on mysql is between 0.01s and 0.0 ...

Experiment 2: sequence assembly 1.art illumina simulated double terminal sequencing Short and long insert libraries: ./art_illumina -ss HS25 -sam -i ./GCF_000146045.2_R64_genomic.fna -p -l 125 -f 10 -m 200 -s 10 -o ./Sc_paired ./art_illumina -ss HS25 -sam -i ./GCF_000146045.2_R64_genomic.fna -p -l 125 -f 10 -m 2500 -s 50 -o ./Sc_matepair Vi ...

1. Meaning When fields of multiple tables are involved in a query, a join of multiple tables is required Selectect field 1, field 2 from Table 1, Table 2,...; Cartesian product: When querying multiple tables, no valid join condition is added, resulting in full join for all rows of multiple tables (Table 1 has m rows, Table 2 has n rows, resul ...

1. Redo After working, I found that life passed quickly. In a twinkling of an eye, it has been more than a week since I last posted a blog, and it has improved a lot this week. Integrate the successful code tested on your own computer into the corresponding modules of the project. There are also many difficulties. First, the database connecti ...

I. Introduction to Redia data persistence 1 background description Redis is an in memory database, and data may be lost in case of power failure. For example, if you hang up the whole redis, then redis is unavailable. If there is no persistence, redis will lose all data. If you make a piece of data to disk through persistence, and then sync ...

1. Deploy server-side and agent-side 1. Preparing for the experiment centos7.4 system servers, one serves as a monitoring server and one serves as a monitored node. The yum source, firewall shutdown, clock service synchronization of each node, and communication between nodes can be done through the host name. 1) All machines turn off fire ...

This article is included in the column ❤️<Redis Factory Essential Skills Pack❤️ Thousands of people praise the collection, the complete set of Redis learning materials, the essential skills of the factory!  Catalog 1. Demand 2. Common design errors 3. Sliding window algorithm 3.1 Solution 3.2 pipeline code implementation 3.3 l ...

What is a DATABASE Efficient media for storing and processing data (disk and memory) It is a warehouse built on computer storage equipment to organize, store and manage data according to data structure. In short, it can be regarded as an electronic filing cabinet - the place where electronic files are stored. Users can add, intercept, update, ...

Typically, LiveData provides updates only when the data changes and only when the observer is active. An exception to this behavior is that observers also receive updates when they change from inactive to active. In addition, if the observer changes from inactive to active for the second time, it will receive an update only if the value has c ...