Communication system node having multiple modules and a shared memory

A method in a contact center system comprising a plurality of services configured to operate using a shared memory, the method comprising:

• upon arrival of a caller, storing a caller state object in an allocated portion of the shared memory by a first service in a first container;
• after the caller is placed on hold, managing the caller by a second service in a second container by reading and updating the caller state object in the allocated portion of the shared memory;
• and
• connecting the caller to an agent by reading and updating the caller state object.

A method comprising:

• storing in a shared memory segment first recycle list information pertaining to a first recycle list associated with a first memory block size;
• storing in the shared memory segment second recycle list information pertaining to a second recycle list associated with a second memory block size that is larger than the first memory block size;
• and
• using the first and second recycle lists to manage the allocation of memory within the shared memory segment, wherein using the first and second recycle lists to manage the allocation of memory within the shared memory segment comprises:
• in response to receiving an instruction to store or create a data object associated with the first memory block size, determining whether the length, L1, of the first recycle list is greater than a first threshold, T1, wherein T1>1;
• and
• as a result of determining that L1 is greater than T1:
• obtaining a memory address from the first recycle list, wherein the memory address identifies a memory block and removing the memory address from the first recycle list;
• and
• using the memory block identified by the obtained memory address to store the data object.