Dynamic buffer allocation in similar infrastructures

A computer-implemented method, comprising:

• obtaining, by one or more processors, historical data related to buffer space usage for each journal in a group of journals comprising a messaging system, wherein each journal utilizes buffer space comprising a common shared storage resource, by monitoring activity in each journal over repeating temporal periods;
• determining, by the one or more processors, for each journal, based on the obtained historical data, a predictability for each journal for each monitored period of the repeating temporal periods, wherein the predictability is selected from the group consisting of:
• predictable and unpredictable, wherein a predictable journal, for a monitored period, uses a predictable amount of buffer space during the monitored period, and an unpredictable journal, for the monitored period, uses an unpredictable amount of buffer space during the monitored period;
• generating, by the one or more processors, based on the historical data, usage statistics for each journal during each monitored period, wherein the usage statistics generated for each monitored period are dependent on whether the journal was predictable or unpredictable during the monitored period;
• for each monitored period, ranking, by the one or more processors, predictable journals for the monitored period, by a buffer space requirement for each journal of the predictable journals;
• based on the rankings for a given monitored period, determining, by the one or more processors, a buffer space requirement for each journal of the group of journals for a current period, wherein the current period shares one or more temporal qualities with the given monitored period;
• and
• based on the determining, allocating, by the one or more processors, for use during the current period, based on the buffer space requirement for each journal, buffer space to each journal of the group of journals, from the buffer space in the common shared storage resource.