Linked Questions

3
votes
2answers
891 views

How does Stack Overflow do caching? [duplicate]

I'm writing an ASP.NET MVC site where I'm running into a dilmena on how to set up proper caching. I'm trying to achieve something similar to how Stack Overflow works with caching, in that all pages ...
2
votes
1answer
90 views

Why does it take time to lose reputation for downvoting? [duplicate]

Occasionally, I downvote a bad answer but the -1 is not subtracted immediately and may sometimes take a few hours. Why is that the case? Why is it not immediate like when gaining a reputation for an ...
2
votes
0answers
61 views

Why doesn't this question appear under tagged questions? [duplicate]

I posted this question some minutes ago, and I can reload that page to make sure it's there, but I cannot see it appear under the newest questions tagged "ruby". It is already several minutes ago. Why ...
1
vote
1answer
41 views

View count and vote count are not matching on a question [duplicate]

The screenshots speak for itself. How is it possible to have 2 upvotes but only 1 view (which should be anyway my view)? Link to the question. I tried to refresh and hard refresh but the view count ...
0
votes
0answers
44 views

How did this happen? [duplicate]

So recently I looked at a user's profile. However, its profile view count was 0. So how did this happen? Since I'm logged in shouldn't it be at least 1?
672
votes
1answer
114k views

Which tools and technologies are used to build the Stack Exchange Network?

What tools and technologies are used to build the Stack Exchange Network? See also: Which tools and technologies are used to build Data Explorer? Return to FAQ index
258
votes
2answers
12k views

Stack Exchange Glossary - Dictionary of Commonly-Used Terms

What are the common phrases, words, abbreviations that are used on Stack Overflow, Server Fault, Super User, Meta Stack Overflow, and the other Stack Exchange sites? This is meant to be a very quick ...
45
votes
1answer
1k views

What does SE use to calculate reputations? SQL aggregate functions? A manual method?

I want to implement something similar to Stack Exchange's reputation system. What would be the better practice: using an SQL aggregate function to recalculate every time it changes, or storing ...
19
votes
2answers
6k views

Stack Overflow DB performance and redis cache

I am trying to understand some of the data storage and caching details of Stack Overflow. Are the pages build completely from redis cached data or does it need to make some db calls? Assuming that ...
14
votes
1answer
2k views

How is NoSql and Data Denormalization Used on Stack Overflow/Stack Exchange

In a recent blog post on the Trello Stack, Brett Kiefer wrote: MongoDB fills our more traditional database needs. We knew we wanted Trello to be blisteringly fast. One of the coolest and most ...
28
votes
1answer
492 views

What is happening in the background when a user upvotes?

I was interested in how the votes are being calculated, and understanding the fact that most probably the vote count is stored in the posts table, raised a new and more important question to me. What ...
12
votes
1answer
2k views

Why was Redis chosen over Memcache for the cache layer for Stack Overflow?

From this post, it is clear that the Stack Overflow team uses Redis heavily and it has been working well for them. Since there are a number of other similar solutions in the cache space, I was ...
13
votes
1answer
118 views

To whom is a saved draft visible?

I just would like to know if a question or an answer saved draft is visible to someone else, apart from the OP. Will a copy of a saved draft remain visible even after it has been deleted? Who has ...
2
votes
2answers
174 views

Order by reputation appears to be broken in users page

See this: Jon Skeet got 1505 reputation gain, while the other user got only 1500. How come Jon is not first?
4
votes
1answer
137 views

Unable to chat after the 20 reputation on stack overflow [duplicate]

Possible Duplicate: How long does it take for chat profiles to update? I have got the 27 reputation and for chat its require the 20 reputation but still i am getting the message that its ...

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