Questions tagged [system-reliability]
The system-reliability tag has no usage guidance.
23 questions
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When should I be worried of Time of check time of use vulnerabilities during database queries?
I am having difficulties on understanding when I should be worried about TOCTOU vulnerabilities and how to avoid them because yes, we can use database transactions but there are different level of ...
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1
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452
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Defining SLI / SLO for ETL and Reporting Application
All,
We're just started on SRE journey and trying to define SLI / SLO for our application.
It is an ETL application where 1. feeds (e.g. start of day, end of day data feeds) comes from various ...
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266
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What is the crux of difference between N version programming and self monitoring architecture?
Source-:https://cs.ccsu.edu/~stan/classes/CS410/Notes16/11-ReliabilityEngineering.html
This is self monitoring architecture. So here computations carried across 2 channels, if they both provide same ...
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338
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Building a program that truly deletes everything
We all know that if we delete a file, the operating system is recycling it but doesn't actually delete it. It just removes it from the directory indexes, and until the data is needed and overwritten, ...
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Thoughts of Google Cloud App Engine Reliability
I have been developing an app that will require a cron task every minute.
We are handling our cron tasks with Spring Boot Scheduling. Although, I am a little worried about the following question:
...
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2
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635
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Running a high availability PostgreSQL cluster on native AWS services only
Backstory: I am unable to use RDS, as I need to install cartridges in my PostgreSQL instances.
I have been trying to pin down an architecture for PostgreSQL running on EC2 instances for a few days. ...
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4k
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Testing can detect the presence of error but not the absence of error, why? [closed]
I hear and see this statement almost in every academic book related to software engineering
Testing can detect the presence of errors and not the absence of errors.
But I do not get it clear. ...
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3
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3
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271
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How to prevent bugs in business-level configurations with similar discipline as in source code?
We have a system that allows our clients to coordinate people (shoppers) so that they can delivery groceries within 45 minutes from the order creation.
Each client has a set of stores where the ...
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2
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132
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How do I ensure my product is correct the first time? [closed]
I am working on a product that will not be able to be updated once released. Furthermore, if the product malfunctions, the results may include death, serious bodily harm, or major financial setbacks. ...
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55
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Do logs enhance availability of service for a well monitored application?
I used to work for teams that built software as a service applications. Our requirements, regarding production, were often the same :
A complex service (web application, database, daemons, typically) ...
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154
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How to ensure that every log event will be delivered to the GrayLog
In our applications we traditionally log events locally into the logging files. As our applications are distributed on multiple server instances, searching for particular events are complicated and ...
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1k
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Dealing with master failure in a master-slave DB setup
I'm learning about system design for the first time and am really intrigued by reliability. Given a setup where you have a master that replicates and writes data through to a slave, how do you persist/...
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Best practices for Heartbeat in distributed systems
We had in our system in the past an external data provider (call it source) sending regular heartbeats to a java application (call it client). If the heartbeat failed, system shut itself down (to ...
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580
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Reliability for FTP Server
We have a Ftp server implemented. The manager wants to add reliability to it. He wants me to write incoming streams into some fast and reliable system (like hbase or redis) before writing them to ...
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133
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Reliable installer [closed]
I have just brutally terminated Skype installer, which now gives me error 1603 whenever I try to restart the installaion. This brings be back to the issue that bothers me for a long time: how do you ...
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Should an online platform be relied on to store mission critical files?
Context:
With my team I created an "online platform" for a client which moved their operation from a paper based system to a content management system (CMS) based submission system on a Virturl ...
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From a software development lifecycle perspective, is duck-typing a benefit or a problem?
Statically-typed languages such as Java afford the benefit of compile-time checking of types - you are guaranteed that an object is of a given type, so:
there is no need to spend time and resources ...
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Are the terms stable and reliable interchangeable?
Is there a difference between stability and reliability (at least in software engineering context) or can they be used interchangeably? If not, what would be some examples of reliable but not ...
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What special considerations are needed when designing databases to hold financial records?
I hope this question isn't too broad. In the future I may need to add some accounting and financial-tracking systems to some applications (mostly web-based applications, but my questions pertains to ...
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478
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Windows Hibernate API [closed]
Is it possible to programmatically trigger the Windows's Hibernate without actually Hibernating, just to take snapshot of the OS at regular intervals? So that the system can return to the previously ...
74
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How come compilers are so reliable?
We use compilers on a daily basis as if their correctness is a given, but compilers are programs too, and can potentially contain bugs. I always wondered about this infallible robustness. Have you ...
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Why isn't software as reliable as a car? [closed]
I had a user ask me this question. We know that cars break down, but that's because of something physical (unless software is involved!).
I tried to answer that software is a much younger industry, ...
6
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359
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Need to re-build an application - how?
For our main system, we have a small monitor application that sits outside our network and periodically tries to log in to verify the system still works. We have a problem with the monitor though in ...
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