Watermarking of Events of an Ordered Event Stream

A method, comprising:

• writing, by a system comprising a processor, a first event to an ordered event stream of an ordered event stream storage system, wherein the writing of the event advances a progression of the event population of the ordered event stream, and wherein the progression corresponds to a raw progress value of raw progress values;
• determining, by the system, an effective progress value based on a deferred commitment of a second event to the ordered event stream;
• determining, by the system, a watermark for the ordered event stream based on the effective progress value;
• and
• enabling, by the system, reading of a portion of events from the ordered event stream based on the watermark.

A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising:

• receiving a raw progress value, wherein the raw progress value was determined in response to a first event being written to an ordered event stream of an ordered event stream storage system, wherein the first event being written advanced a progression of the event population of the ordered event stream, and wherein the raw progress value corresponds the progression of the event population at the writing of the first event;
• determining an effective progress value based on a deferred commitment of a second event to the ordered event stream;
• indicating a watermark for the ordered event stream based on the effective progress value;
• and
• altering a permission related to reading of a portion of events from the ordered event stream based on the watermark.