Multiple active proxy support

RLEC provides high performance data access through a proxy process that manages and optimizes the access to shards within the RLEC cluster. Database definition With RLEC 4.4, each node contains a single proxy process. Data recovery definition Each proxy can be active and take incoming traffic or passive and wait for failovers.

RLEC allows multiple databases to be created. Database or database Each database gets an endpoint (a unique URL and port on the FQDN). Data recovery software windows This endpoint receives all the traffic for all operations for that database.


Cost of data recovery By default, RLEC binds this database endpoint to one of the proxies on a single node in the cluster. Database first entity framework This proxy becomes an active proxy and receives all the operations for the given database. Data recovery iphone 5 (note that if the node with the active proxy fails, a new proxy on another node takes over as part of the failover process automatically).

In most cases, a single proxy can handle a large number of operations without consuming additional resources. Raid 0 data recovery However, under high load, network bandwidth or a high rate of packets per second (PPS) on the single active proxy can become a bottleneck to how fast database operation can be performed. 7 data recovery serial key In such cases, having multiple active proxies, across multiple nodes, mapped to the same external database endpoint, can significantly improve throughput.

With the multiple active proxies capability, RLEC enables you to configure a database to have multiple internal proxies in order to improve performance, in some cases. Database modeling It is important to note that, even though multiple active proxies can help improve throughput of database operations, configuring multiple active proxies may cause additional latency in operations as the shards and proxies are spread across the nodes in the cluster.

Note: When the network on a single active proxy becomes the bottleneck, you might also look into enabling the multiple NIC support in RLEC. A database record is an entry that contains With nodes that have multiple physical NICs (Network Interface Cards), you can configure RLEC to separate internal and external traffic onto independent physical NICs. Java database For more details, refer to Multi-IP & IPv6.

Having multiple proxies for a database can improves RLEC’s ability for fast failover in case of proxy and/or node failure. Easeus data recovery 9 serial With multiple proxies for a database, there will be no need for a client to wait for the cluster to spin up another proxy and a DNS change in most cases, the client will just use the next IP in the list to connect to another proxy. Iphone 5 data recovery software free Proxy policies

There are multiple proxies that are bound to the database, one on each node that hosts a database master shard. Database partitioning This mode fits most use cases that require multiple proxies.

There are multiple proxies that are bound to the database, one on each node in the cluster, regardless of whether or not there is a shard from this database on the node. Database gif This mode should be used only in special cases.

The proxy bindings have been manually updated (using rladmin or because of the automatic actions executed by the cluster internals.) by binding or unbinding specific proxies. Database project ideas When this is done, the database is marked as having the Manual policy and therefore the cluster will not automate any binding or unbinding of proxies.

The proxy binding is done with the behavior that existed in earlier versions. Iphone 5 data recovery without backup The binding is static and a slave listener is only created if replication is available.

The cluster should attempt to place as many shards as possible on the smallest number of nodes as possible. Bplan data recovery This mode is useful when there is a single proxy in order to reduce the latency between the proxy and the database shards.

The cluster should attempt to spread the shards across as many nodes in the cluster as possible. Data recovery boston ma This mode is useful when multiple proxies are bound to the database in order to spread the traffic as much as possible across cluster nodes.

You can configure the proxy policy using the bind command in rladmin. Ipad 2 data recovery The following command is an example that changes the bind policy for a database called “db1” with an endpoint id “1:1” to “All Master Shards” proxy policy.

Note: you can find the endpoint id for the endpoint argument by running status command for rladmin. Data recovery company Look for the endpoint id information under the ENDPOINT section of the output.

During the regular operation of the cluster different actions might take place, such as automatic migration or automatic failover, which change what proxy needs to be bound to what database. Data recovery network drive When such actions take place the cluster attempts, as much as possible, to automatically change proxy bindings to adhere to the defined policies. Data recovery yelp That said, the cluster attempts to prevent any existing client connections from being disconnected, and hence might not entirely enforce the policies. Database join table In such cases, you can enforce the policy using the appropriate rladmin command(s).

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