How PHP drives mongodb

PHP How to drive MongoDB

This article mainly introduces “PHP How to drive MongoDB”, In daily operation , I believe a lot of people are PHP How to drive MongoDB There are doubts about the problem , Xiao Bian consulted all kinds of materials , Sort out simple and easy-to-use operation methods , I hope to answer ”PHP How to drive MongoDB” Your doubts help ！ Next , Please follow Xiaobian to learn ！

MongoDB It's a by C++ language-written , Database based on distributed file storage .MongoDB Is a product between relational and non-relational databases , Non-relational databases are the most versatile , Most like a relational database .

When and mongodb When the replica set is connected , The driver first attempts to connect and verify each non Hidden node . If a node is “down” state , Will skip .

Creating an index sometimes blocks new connections

However , If a node is “UP” state , But with a write lock , Then the verification cannot be carried out , So the driver will be suspended .

stay mongodb 2.6 Before version , Common problems in indexing . All indexes are created in the foreground or background , stay secondary The end will be created in the foreground .

stay PHP Driver's 1.5.3 The version will be improved , When the index is created , Allow verification to second Node validation .

Reduce is_master_interval value

For applications that require high availability , It is recommended to check the configuration settings of the default driver runtime .

mongo.is_master_interval Option controls how the driver recovers quickly when the replica set is re elected .

is_master_interval The default value of the option is 15s, Set the driver to send “isMaster” Ask for each mongod Time interval of the instance . These requests help the driver determine the topology of the replication set , Specifically , It is to request to detect which node is primary And can receive write operations .

It is recommended that the value be set to 1 or 2 second , So that when the driver is in cluster election or failover , Can quickly locate primary node . Of course! , It also depends on how many clients there are and ping The frequency of .

Be careful , When primary When a node changes , Such as election or failover , There will always be a few seconds for the driver to receive a “MongoConnectionException” Information “No candidate servers found”. These exceptions need to be handled in your code , Otherwise, the application will be terminated .

Understand how connections are handled and configure connections TimeoutMS

PHP The driver does not use connection pooling . therefore , I suggest you every PHP The process creates a connection . however , If web There are many applications PHP Working process , Many new database connections will be created ,PHP Drivers cannot share connections between processes . therefore , When network nodes are slow , The server When busy ,PHP Applications are particularly vulnerable to obstacles when creating initial database connections .

under these circumstances , It is recommended that you customize connectionTimeoutMS Options and notes php.ini Medium mongo.ping_interval Options .

connectionTimeoutMS

PHP The driver does not define a default connection timeout . contrary , The default value is php.ini In the document default_socket_timeout The choice decides , The default is 60 second . The connection will wait 60 Seconds off , It's been a long time , It needs to be reduced .

It is strongly recommended to connect the string through URI Options display settings connectionTimeoutMS Options . Set it to 5 To 30 The value between seconds .

mongo.ping_interval

mongo.ping_interval The default value is 5 second . This option sets the driver to send ping Request to each mongod Instance discovery “down” Time interval of nodes , Blacklist of servers used to track drivers . Tell the driver which nodes to ignore .

Here we are , About “PHP How to drive MongoDB” That's the end of my study , I hope we can solve your doubts . The combination of theory and practice can better help you learn , Let's try ！ If you want to continue to learn more related knowledge , Please continue to pay attention to Yisu cloud website , Xiaobian will continue to strive to bring you more practical articles ！