I’ll separate this into points I hope will make sense. I might be re-hashing a bit of what I have written in The Hitchhiker’s Guide to Concurrency. You might want to read that one to get details on the rationale behind the way message passing is done in Erlang. 1. Message transmission Message passing in …
The proper way to handle problems inside akka actors is not to throw an exception but rather to set supervisor hierarchies “Throwing an exception in concurrent code (let’s assume we are using non-linked actors), will just simply blow up the thread that currently executes the actor. There is no way to find out that things …
Notice that space-compatible (radiation-hardened, aeronautics compliant) computing devices are very expensive (including to launch in space, since their weight exceeds kilograms), and that a single space mission costs perhaps hundred million € or US$. Losing the mission because of software or computer concerns has generally a prohibitive cost so is unacceptable and justifies costly development …
Besides whatever metadata the RAID controller uses, are there any differences between these two arrays (in terms of data layout, performance, reliability)? Yes. RAID5 uses a single, rotating parity while RAID6 uses two. You may be visualizing dedicated parity disks, but they’re in fact rotating. RAID5 should be rather straight-forward: With RAID6, imagine the last …
To do this properly, you need to have: Two seperate instances in two datacenters (as you’ve already determined) Synchronisation between the two datacenters (as you’ve already determined) A way of re-directing clients from one to the other in the event of a failure There are two common ways of doing this. One simple, one… not. …
Working for about 4-5 years with software/firmware development and environment testing of miniaturized satellites*, I would like to share my experience here. *(miniaturized satellites are a lot more prone to single event upsets than bigger satellites due to its relatively small, limited sizes for its electronic components) To be very concise and direct: there is …