mongodb maintenance

1.SESSION generally not what you say this way of working, you open a browser, then open a, request the same URL, then one of the landing, the other one will never also login. Session and browser itself this program is linked, generally not through the IP and port to bind (if it is port and IP, browser closed session is not necessarily invalid, there is obviously a security problem, this is because of some problems of TCP protocol, it is easy to be exploited).When the browser and the server conta

I believe we all know the importance of computer motherboards, it is carrying the main hardware of the computer is an important component, can be said to be a person's overall skeleton. Computer motherboards in the computer's important role is not to be overlooked, the performance of the motherboard to a certain extent determines the performance of the computer, there are a lot of computer hardware failures because of the computer's motherboard and other parts of bad contact or damage caused by

When the application is in maintenance, we can temporarily close the program, the specific use is to usePHP Artisan DownArtisan is a program in the root directory of Laravel, and when this command is executed, the app in the app/start/global.php file is called::d own functionWhen maintenance complete buckle, use PHP artisan up to enable the applicationAPP::d Own (function (){Return Response::make ("Being Ri

Hardware-Side maintenance Avoid shaking Vibration can be said to be a big enemy of the hard drive, once the vibration is more intense will be read and write abnormal even caused by physical damage to the disc or head. Users should try to avoid the bumps in the larger car, use a notebook on a ship; it is best to keep your notebook on a stationary desktop when you read and write it for a long time; when typing, be careful not to strike gravity, which

Ubuntu Mysql maintenance and tumysql MaintenanceInstall MySql Sudo apt-get install mysql-serverGo to Mysql Shell Mysql-u root-pQuery a database Show databases;Create a database Create database $ DB_NAME;Database Information Retrieval Use $ DB_NAME; show tables;Allow remote listening Sudo vi/etc/mysql/my. cnf In the my. cnf file Bind-address = 127.0.0.1Comment out Create user and authorization CREATE user' $ USER_NAME '@' % 'identified by' $

still cannot be printed. 11. We found that the port number in the "attribute" of the printer has two "USB" ports. Select another one and test it to print it. 12. Change the data cable back to the original USB interface, and the data cannot be printed during testing. 13. I found that there is another USB port in the "Port", so I chose the new one and tested it. I can print it again. 14. It feels strange. Conclusion: 1. The general cause may be the blocking of the printer print task. 2. Or

Some other maintenance activities are involved when using the recovery directory, such as upgrading the recovery directory during database upgrades or migrations, manually configuring the database counterpart, and synchronizing the recovery directory after some database operations. 1. Unregister the database in Rman Before Oracle 10g, it was a manual process to unregister the database from the recovery directory. In 10g, removing a database from the

1. Notebook keyboard in the long term after the use of a key cap will be polished, affect the beauty and the use of life, if the keyboard more cherish can buy external USB keyboard to use, to prohibit such topics. 2. When cooking the dust, you can use the brush to clean up the drawbacks, or take advantage of a high-pressure jet jar (SAC) that normally  dust, exhale the dust  out, or use a handheld vacuum cleaner to remove dust and debris from the keyboard. Clean surface, the soft cloth can be

A Maintenance of no image in the front half of the printer's printed page An HP Kserjei laser printer, on the printed page often appear in the first half of the image, the second half of the manuscript is printed in the first half of the original, but the image is normal, no deformation. The failure phenomenon indicates that the paper is caused by the bad, and under normal circumstances, when the paper is rubbed to the top and bottom of the bit roll

days; In this example, we saved the backup for nearly 7 days, and more than 7 days of backup is discarded. (2) Backup redundancy backup Save policy This backup strategy Rman retains n database backups starting with the latest backup. Such as: Configure retention Policy to redundancy 3; In this example, we save the last 3 valid backups. (3) Maintenance of the preservation strategy When a given backup or replica is discarded because of the crite

Battery Maintenance Tips Avoid high temperature use The higher the temperature of a cell phone's battery, the more energy it consumes and the greater the consumption of battery life. So, if your iphone is very hot, you might want to let it rest for a long time, so it's good to prolong battery life. Turn off features that are higher in power consumption such as WiFi, Bluetooth, 3G, 4G network functions, in the state of not using they will continue

("54a1005756a081db9d632746"), "id": 2, "name": "ttest1", "code": "102 "} Condition (> =): id> 3. > Db.doc test. find ({id: {$ gt: 3 }}); {"_ Id": ObjectId ("54a100a056a081db9d632748"), "id": 4, "name": "ttest4", "code": "104 "} > Db.doc test. find ({id: {$ gte: 3 }}); {"_ Id": ObjectId ("54a1008c56a081db9d632747"), "id": 3, "name": "ttest3", "code": "103", "class ": "doc "} {"_ Id": ObjectId ("54a100a056a081db9d632748"), "id": 4, "name": "ttest4", "code": "104 "} Condition (in) query with the c

Computing Framework , which is also handy for data statistics.Other aspects of the advantages are still in the excavation, I have just contacted this soon.8.4 MongoDB Defects1. transaction relations support is weak . This is also a common flaw for all NoSQL databases, but NoSQL is not designed for transactional relationships, and the application is still in demand.2. There is some lack of stability , as can be seen from the above tests.3.

era behind HTML. For a time as if MongoDB mastered well, can have a bowl of rice to eat. And many online education sites are also dedicated to openingLessons to popularize the use of MongoDB for people who are eager to get IT from other professions. We must say that this kind of propaganda is very successful. It's probably because MongoDB entrepreneurs have been

19710.2.1 log 19710.2.2 Monitor Tool 19810.2.3 external monitoring application 20110.2.4 diagnostic tools (sniff, bsondump) 20110.3 maintenance 20210.3.1 backup and recovery 20210.3.2 compression and repair 204Upgrade 10.3.3 to 20510.4 Performance Tuning 20510.4.1 index and query 206 for improved performance10.4.2 add memory 20610.4.3 improve disk performance by 20710.4.4 horizontal scaling 20710.4.5 seek professional help 20710.5 conclusion 208Appen

MongoDB Study Notes (1) -- install MongoDB in Windows and take mongodb Study Notes First, download the windows Installation Package for mongodb from the official website, select a 32-bit or 64-bit version based on your system type, and then follow the prompts to complete the next step. If the installation directory is

[Learning MongoDB step by step]-Brief Introduction to MongoDB (1), brief introduction to mongodb In the previous blog, we spoke about NoSQL. We have a comprehensive understanding of NoSQL. Starting from this blog, we will take everyone into the MongoDB world. Next we will introduce

Mongodb advanced 3: mongodb management and mongodb advanced management Http://blog.csdn.net/stronglyh/article/details/46827141 Usually, there are many win development environments, but the production environment should be put on unix. I. Command There will be a lot of installation, there are a lot of information on the Internet, the following are some parametersQ

One of the primary MongoDB series: MongoDB installation and recommended configuration; Primary mongodb Analysis The first time I heard about apsaradb for MongoDB, I must have heard a lot about it before I decided to learn about it. No matter what purpose you start to embark on this learning journey, I am also happy to

collection. A bit of a ring-queue meaning. It has high performance and queue expiration characteristics (expiration in order of insertion). Somewhat similar to the concept of "RRD". The Capped collections is a high-performance automatic maintenance object Insertion Order. It is very suitable for similar logging functions and the standard collection differs, you must explicitly create a capped collection, specifying the size of a collection, in bytes.