Here, A does some work, and then passes it on to B. The problem is, that the work is variable and unpredictable. For example, task 3 takes little time on A, but takes longer on B. And taks 4 is a lot longer than task 2.
In general without a queue, this means there will be some time where B cannot do any work, because A is working on something that is taking a long time, or vice versa. A queue can make it so that both A and B are working consistently. This is because when A is taking long, B can catch up on its backlog (the work A put in the queue while B was doing other things). And when B is taking long, A can still do work and put it in the queue. Thus, if on average the two produce and consume at the same rate, they will work at a full rate because they will usually be able to do something.
This comment was marked helpful 0 times.
monster
Here the important thing is that if there is no queue, A must wait for B to finish its last consumption, otherwise B will not receive the responce from A, then A should be waiting and idle.
However with the queue, A can send the response to the queue of B and A can continue its production of the next work.
This comment was marked helpful 0 times.
abattagl
Having a queue between two workers allows for variability. Instead of the workflow being rigid, the queue makes the start-to-finish flow of work fluid.
Here, A does some work, and then passes it on to B. The problem is, that the work is variable and unpredictable. For example, task 3 takes little time on A, but takes longer on B. And taks 4 is a lot longer than task 2.
In general without a queue, this means there will be some time where B cannot do any work, because A is working on something that is taking a long time, or vice versa. A queue can make it so that both A and B are working consistently. This is because when A is taking long, B can catch up on its backlog (the work A put in the queue while B was doing other things). And when B is taking long, A can still do work and put it in the queue. Thus, if on average the two produce and consume at the same rate, they will work at a full rate because they will usually be able to do something.
This comment was marked helpful 0 times.
Here the important thing is that if there is no queue, A must wait for B to finish its last consumption, otherwise B will not receive the responce from A, then A should be waiting and idle. However with the queue, A can send the response to the queue of B and A can continue its production of the next work.
This comment was marked helpful 0 times.
Having a queue between two workers allows for variability. Instead of the workflow being rigid, the queue makes the start-to-finish flow of work fluid.
This comment was marked helpful 0 times.