Streaming data service with isolated read channels

A system, comprising:

• one or more computing devices of a data streams management service;
• wherein the one or more computing devices include instructions that upon execution on a processor cause the one or more computing devices to:
• determine, based at least in part on an estimate of a number of isolated read channels to be programmatically associated with one or more partitions of a first data stream, a storage configuration comprising one or more storage nodes to be used for the one or more partitions;
• store a first set of metadata indicating that a first isolated read channel has been associated with a first partition of the one or more partitions, wherein the first isolated read channel has an associated first read performance limit setting;
• store a second set of metadata indicating that a second isolated read channel has been associated with the first partition, wherein the second isolated read channel has an associated second read performance limit setting;
• capture respective metrics of read operations performed using the first isolated read channel and the second isolated read channel;
• delay, based at least in part on a determination that a difference between (a) the metric of read operations performed using the first isolated read channel and (b) the first read performance limit setting meets a first criterion, one or more data transfers of read operations associated with the first isolated read channel, wherein a decision to delay the one or more data transfers is not dependent on the metric of read operations performed using the second isolated read channel;
• and
• transfer, based at least in part on a determination that a difference between (a) the metric of read operations performed using the second isolated read channel and (b) the second read performance limit setting does not meet a second criterion, contents of one or more data records of the first partition to a requester associated with the second isolated read channel, wherein a decision to transfer the contents is not dependent on the metric of read operations performed using the first isolated read channel.