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| title: How Client Load Balancing Works |
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| In a distributed system, servers can be added or removed and their capacity to service new client connections may vary. The server connectivity options are specified in the connection pool configuration. |
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| The connection pool API supports connecting to servers through server locators or directly connecting to servers. |
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| - **[Server Locators](about-server-locators.html)** |
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| Server locators continuously monitor server availability and server load information. The client is configured with a list of server locators and consults a server locator to request a connection to a server in the distributed system. |
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| - **[Connection Pools](about-connection-pools.html)** |
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| Clients contain connection pools. Each region is associated with a connection pool using a region attribute, and operations on the region use connections from the respective pools. |
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| - **[Discovering Locators Dynamically](discovering-locators-dynamically.html)** |
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| A background thread periodically queries the locator for any other locators joining the distributed system. |
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