Reliability is one of the values which is hard to bring in our service. It is important to make sure everyone in our team knows what is the real meaning of these that will help them to bring proper reliability to our service. Otherwise, at the first problem that is pop-out of the box, they will start using the word “reliability” in their own context words.
Before I you introduce reliability in our service, we have to define what it is. It means different things to different people. For instance, the people who work on different parts of a system perceive in different ways.
Reliable Service
Most of us confuse Availability and Reliability.
Are both different?
Yes, both are different and these are values that hold our service.
Availability is the amount of time that service or resource is fully available for its consumer.
Ok, but what if your service is available however the user cannot access it properly.
where does it count?
These count in reliability because customers are unable to use the services you’re providing, they can’t take advantage of any of the features you’ve so painstakingly built forth.
It is a costly and often unreachable target to set. A more realistic goal is that the system should meet the expectations of its users and strive to maintain their trust.
Availability vs Reliability
Latency is a time interval between the stimulation and response, or, from a more general point of view, a time delay between the consumer asks for information from service and he received a response.
Throughput(Performance) is the actual amount of data that is successfully sent/received over the communication link.
Let us consider we have a service i.e www.knoldus.com and we are going to search for blogs on our service then first of all www.knoldus.com must be Available (Availability) so that it can listen for search action and return a response let say the time taken to return response is 0.5 sec (Latency) and the response received is correct without failure (Throughput) i.e it give 9900 correct response out of 10000 requests.
Reliability holds Service
Probably the easiest one to convince anyone to use our service is reliability. To maintain reliability in service we need to ensure that all 3 components of reliability must perform well. _Availability, Latency, _and _Throughput _Collectively, all these help in creating service reliable.
Reliability (high) = Availability(high) + Latency(low) + Throughput(high)
While building you service you should keep these thing mind.
#devops #scala #sre #reliability