Enterprise Cache Protocol (ECP): a distributed data caching architecture that manages the distribution of data and locks among a heterogeneous network of server systems.
Hello Community,
I'm currently planning a system upgrade from Caché (2018.1.8.766) to InterSystems IRIS (2024.1). The environment consists of one database server and three application servers connected via ECP.
I’m considering two possible upgrade approaches:
- Upgrade the application servers to IRIS first.
Since IRIS is expected to be backward-compatible with Caché over ECP, the database server would remain on Caché temporarily. - Upgrade the database server first,
followed by upgrading the application servers, as they don’t store data.
Are you familiar with SQL databases, but not familiar with IRIS? Then read on...
Sometimes customers need a small IRIS instance to do something in the cloud and shut it down, or they need hundreds of containers (i.e. one per end user or one per interface) with small workloads. This exercise came about to see how small an IRIS instance could be. For this exercise we focused on what is the smallest amount of memory we can configure for an IRIS instance.Do you know all the parameters that affect the memory allocated by IRIS ?
Memory Settings
These are the different buckets that affect memory allocation by IRIS and its corresponding parameters: