The 2nd Monitor

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10:19 PM

Q: Hash Tables insert code implementation assistance

I having a problem understanding hash tables (english not my first language). I have an assignment that I having problem understanding it because I'm kind of new in programming java so I just barely have an understanding of programming in. I kind of wrote the code but I feel like I have not idea ...

java

Webby

10:44 PM

@rolfl have some time for quick CR?

rolfl

Your Socket question?

Webby

This one -

http://codereview.stackexchange.com/questions/61536/having-full-atomicity-against-all-the-threads-without-impacting-performance-or-t

rolfl

@Webby - how much code is needed to get something running? Can I pull the code and test it locally>?

(as much as I love CR (and I do), it is easier for me to 'see' code in my system....).

Webby

Actually you cannot run this since it needs to hit my service from the background thread which is internal to our company network.

I can paste code in pastebin for your full flow understanding if you would like?

rolfl

Yeah, do that (if you're allowed). I'll put it in eclispse, and look through it.

(play) with it.

(I see lots of .... in your code).

Webby

10:52 PM

Is pastebin good for all these things or something else we can use?

rolfl

Hmmm... I think I can figure it out from what you have posted.

So, hold off for a bit.

Webby

sure

rolfl

You should know that I have done similar stuff before, but in a different way, which 'biases' me

Webby

I see

Just FYI

I have this code running in production for a while and it works fine and pretty fast

when all the servers are up and nothing is in block list

then I don't see any Timeout happening from future.get

but as soon as any server is down which we are not suppose to make a call from the main reader threads

I start seeing lot of client timeouts

rolfl

OK, I saw your deleted question too.

Webby

10:56 PM

yeah that one has more detail by which you can get more understanding how I am making valid hostnames

if you want I can undelete so that you can get better understanding

rolfl

No need to undelete. Pastebin an example of the stack trace (relevant part).

(Timeout excpetion).

Or at least point me to the line that fails.

(edit the deleted post?)/

Webby

Q: Why I am seeing lot of client timeouts if any one server goes down?

I know it's a pretty long question but I am stuck on this for a while and not able to understand why it is happening so providing as much details as possible. I am working on a project in which I construct a url with a valid hostname (but not a blocked hostname) and then execute that URL using...

java optimization multithreading thread-safety atomic

rolfl

@Webby - just because I am offering to help here, does not make the question on-topic on CR ;-)

Webby

sorry

I thought you wanted me to edit the undeleted the question

got confused

rolfl

I can see the deleted question anyway.

(and edits you make to it).

Webby

10:59 PM

I deleted it now

sure

now I undersatnd what you said

rolfl

My dinner has just been served, so I am off for an hour, or so.

But, I will keep this in mind

Webby

sure

But I cannot edit deleted question

This post is deleted and cannot be edited.

rolfl

Oh, odd.

COmment on it?

Webby

comments disabled on deleted / locked posts / reviews

not sure whether this is feasible

let me try to come up with something on pastebin

for your better understandinng

Captain Obvious

11:28 PM

Q: My first go at making a webapp using bottle, anything wrong with my initial setup?

Here is a screenshot of my setup: http://i.imgur.com/4vl7igc.jpg Here is the actual code: #activate python virtualenv activate_this = 'C:/Users/D/Dropbox/_mypyapp/learnbottle/learnbottle/scripts/activate_this.py' execfile(activate_this, dict(__file__=activate_this)) #import dependencies import...

python beginner web-services framework

Webby

@rolf here you go. I have copied all the necessary classes which is needed for the undersatanding purpose on the pastebin

This is my factory class -

pastebin.com/w3LX9NKQ

This is my client class -

This is my task class -

pastebin.com/sj9fYUwB

pastebin.com/WWxGKbtt

This is my mappings class -

pastebin.com/7RQm6bcA

And this is my scheduler -

pastebin.com/8LJ8JPEb

so the actual flow is, people will get the instance of DataClient from the factory and call getUserDataSync method by passing DataKey.

While getting the instance of DataClient from the factory, it will start the background thread which is in DataScheduler class which runs every 10 minutes.

And then the call will go to DataTask class into call method and then I use mappings object to make the list of valid hostnames which I need to make a call. And during the RestTemplate call if that server is down, then I will add this server in the block list so that we don't make call to this server. And as soon as the server is UP, background thread will update this list auutomatically every 10 minutes.