:
Using Mongodb.bson;Using Mongodb.driver;
To perform data operations, first instantiate a mongoclient
var client = new Mongoclient ("mongodb://127.0.0.1:27017");
Then create DATABASE and collection
var database = client. Getdatabase ("foo");var collection = database. Getcollection
Then we can try to insert a piece of data, the code is as follows
var document = new Bsondocument{{"Name", "SQL Server
Label:MySQL and MongoDB are common open source databases, but MySQL is a traditional relational database, MongoDB is a non-relational database, also known as a document database, is a NoSQL database. They each have their own merits, the key is to see where to use. Take our company project for example, in the early project, all in the use of relational database, u
This is a creation in
Article, where the information may have evolved or changed.
Performance test Report for Kingshard
Before the several blog, to everyone to share is Kingshard (Https://github.com/flike/kingshard) architecture and design. In fact, many people are also very concerned about the performance of Kingshard. Recently enthusiastic Netizen Bigpyer has done the detailed
Mysql performance optimization configuration parameters and mysql performance optimization parameters
To modify the values of the following parameter configuration items, refer1. connection settingsShow variables like '% max_connection % ';Show status like '% Max_used_connections % ';Max_used_connections/max_connection
function similar to Redis, Memcached, and other KV features: Compared with MySQL, MonoDB is simpler and faster. Modifier is also a container that MongoDB can use to track user behavior. In practice, Modifier is used to quickly save user interaction behaviors to MongoDB for later statistical analysis and customization.
5. All attribute types support indexes and e
determine the speed of MongoDB query.Conclusion1. Li Yun's cloud host has made certain restrictions that result. Regardless of setting the system, the configuration of the database, all. Cannot break through. An order of magnitude of QPS.2. The number of client CPU cores determines the speed of MongoDB queries.3.tcp limit passed. Walk inside. Nets can be avoided.4.linux OS beats windows. So the
query performance is that there is too much data to access. Most poorly performing queries can be optimized by reducing the amount of data accessed.1. Verify that the application is retrieving a large amount of data than is needed. This usually means that too many rows have been accessed, but sometimes it is possible to access too many columns.2. Verify that the MySQL server layer is analyzing a large numb
We always see our advantages and disadvantages in the comparison, which is the same for mongodb. the comparison study allows us to master the basic knowledge about mongodb as soon as possible. Comparison between mongodb and mysql commands relational databases generally refer to databases and tables. we always see their
similar functions as KV Redis and memcached: simpler and faster than MYSQL,MONODB. Modifier is also a container that MongoDB can be tracked for user behavior. In practice, modifier is used to quickly save user interaction behavior to MongoDB for later statistical analysis and personalized customization.
5. All attribute types support indexes, even arrays: this
system very wellHow to use indexes to speed up retrieval while targeting optimized indexes.Optimizer profileThe MongoDB database Profiler is a slow query log feature that can be used as a basis for optimizing our databases.Turn on the profiling function, there are 2 ways to control the profiling switch box level.Add-profile= level when starting MonggodbThe Db.setprofilinglevel (level) command is called on the client to configure in real time.The prof
Recent projects where the server is often a machine, I suspect that is not a database problem, but I do not know where to start optimization.MySQL performance optimization has always been very necessary to learn!ConsiderBuy: "High-performance MySQL (3rd edition)"Student Welfare: The electronic version finally found: Put in the cloud disk, share to the needs of fr
Original link: http://page.factj.com/blog/p/4078MongoDB has been popular for a long time, compared to MySQL, exactly what scenes need to use MongoDB? Here are some summaries.Higher write loadBy default, MongoDB is more focused on high data write performance than transactional security, and
%read
100%read
Comparison of wiredtiger_syncperiodsecs_60 with 1
Sharding Cluster Performance Pressure measurement
Description
Scenario 1-4 1000W data per load, data size approx. 13G
Scenario 5 load 5000W data, data size approx. 75G
Test method
YCSB Pressure Measurement
Test Result Scenario 1: Single node _100%insert (load data) Scenario 2: Single node _50%update50%readScenario 3: Sing
Today, database operations are increasingly becoming the performance bottleneck of the entire application, especially for Web applications. Concerning the performance of the database, this is not just something that DBAs need to worry about, but it is something that our programmers need to pay attention to. Today, database operations are increasingly becoming the perfor
MySQL is a star in relational databases, and MongoDB is a leader in document-based databases.
MySQL is a star in relational databases, and MongoDB is a leader in document-based databases.
The following is a design example to compare the two: assume that we are maintaining a mobile phone product library, which includes
Tags: Usage resize procedure table operation ble SQL injection L database support Address of this article Share an outline: 1. Optimize your query for query caching
2. EXPLAIN your SELECT query
3. Use LIMIT 1 4 for a single row of data.
Jianjian index 5 for the search word
. In the join table, use a fairly type of example and index it
6. Never ORDER by RAND ()
7. Avoid SELECT *
8. Always set an ID of 9 for each table
. Use ENUM instead of VARCHAR
10. Get advice
from PROCEDURE analys
Distributed Database computing involves distributed transactions, data distribution, and data convergence computing.
Distributed Databases can achieve high security, high performance, high availability, and other features. Of course, they also bring high costs (fixed costs and operational costs ), we analyze the design ideas from the implementation of MongoDB and MySQL
MySQL and MongoDB are open source common database, but MySQL is a traditional relational database, MongoDB is a relational database, also known as a document database, is a NoSQL database. They each have their own advantages, the key is to see where to use. So the SQL (full name structured Query Language) statement tha
about MongoDB
MongoDB is a database based on distributed file storage. Written by the C + + language. Designed to provide scalable, high-performance data storage solutions for WEB applications.
MongoDB is a product between a relational database and a non-relational database, and is the most versatile and most like rel
method One: MongostatThis tool provides a quick view of statistics for a set of running MongoDB instances, using the following:[[email protected] bin]#./% idx Miss% QR|QW ar| AW conntime *0 *0 *0 *0 ... 0 0 0|0 1|0 4 01:19:15*0 *0 *0 *0 ... 0 0 0|0 1|0 4 01:19:16*0 *0 *0 *0 ... 0 0 0|0 1|0 4 01:19:17It refreshes the status value every second, providing good readability, which allows you to observe the performance
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