mongodb no candidate servers found

Goodbye to MongoDB, hello PostgreSQL Olery was founded almost five years ago. It started with the single product (Olery Reputation) developed by Ruby proxy. Over time, we began to work on a series of different products and applications. Today, our

Creating an index sometimes blocks new connections. When establishing a connection with the mongodb replica set, the driver first tries to connect and verify each non-hidden node in the cluster. If a node is in the "down" status, it will be skipped.

Creating an index sometimes blocks new connections.When establishing a connection with the mongodb replica set, the driver first tries to connect and verify each non-hidden node in the cluster. If a node is in the "down" status, it will be skipped.

Creating an index sometimes blocks new connections When a connection is established with the MongoDB replica set, the driver first attempts to connect and validate each of the nodes that are not hidden in the cluster. If a node is a "down" state,

Connection Pool, connection pool, persistent connection, and short connection pool. PHPMongoDBdriver version (1.2.0-1.2.12only) uses the connection pool (ConnectionPooling) 1.1.4 and earlier versions. You can choose to use a short connection or

The purpose of decision analysis and resolution (decision Analytics and Resolution, DAR) is to use the formal assessment process to assess the various options identified, based on established guidelines, to analyze possible decisions and determine

1. Problems with the mysql+memcached architecture The actual MySQL is suitable carries on the massive data storage, through memcached hot spot data loading to the cache, speeds up the visit, many companies have used this kind of architecture, but

The first part: Concept 1, why use NoSQLImpedance detuning: The difference between the relational model of a relational database and the data structure in memory.Integration Database : Multiple applications that are typically developed by different

Unemployment is like a joke in the IT industry. In order to compete for top talent, many companies will offer higher salaries to attract high-level developers. "Our clients are getting a general raise. As wages have risen, so have their expectations