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• How to increase the disk cache of Windows 7

  - by Mark Christiaens

  Under Windows 7 (64 bit), I'm reading through 9000 moderately sized files. In total, there is more than 200 MB of data. Using Java (JDK 1.6.21) I'm iterating over the files. The first 1400 or so go at full speed but then speed drops off to 4ms per file. It turns out that the main cost is incurred simply by opening the files. I'm opening the files using new FileInputStream (and of course closing them in time to avoid file leaks). After some investigating, I see that Windows' disk cache is using only 100 MB or so of RAM although I have 8 GiB available. I've tried increasing the cache size using the CacheSet tool but any values I provide are considered out of range. I've also tried enabling the LargeSystemCache registry key but (after rebooting) the CacheSet tool still indicates I'm using 100 MB of cache (and doesn't increase during the test run). Does anybody have any suggestions to "encourage" Windows 7 to cache my 9000 files?

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• How to configure DNS BIND to work locally on one computer?

  - by user619656

  I want to do some changes to the BIND source code. In order to test those changes I want to be able to post queries to my local BIND server and for it to use only the local zone files. I know how to make the zone files and somewhat the named.conf file but what should i put in /etc/resolv.conf? In resolv.conf currently there is the line nameserver 192.168.0.1 witch i guess is my router IP address and the queries go through the router to my ISP. I want those queries to go to the local BIND server and to look for answers in the zone files i provided. Is there a way for this using resolf.conf file or should i do something else?

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• Co-worker renamed all of my queries

  - by anon

  I don't know if I should be very irritated or what. I single handedly built over 300 queries for a large database, and developed a naming convention so I could find them later. No one else in my office even knows how to build a query, but I came in yesterday to find that all of them had been renamed. I am now having a very hard time finding things, and I am trying to figure out what to do. I spoke with the person responsible, and she just downplayed the whole thing. She said she renamed them so she can find them more easily. Unfortunately, I am the only one who knows how to build, edit, and maintain them, and the only reason she needed to find them was to test the queries. The new naming convention doesn't make sense at all, and I feel like we have taken a backwards step in the development process. What I'm trying to figure out is: 1) Am I overreacting? 2) What is the best way to handle this? I hate to mention this to my boss, but after speaking with my co-worker yesterday, I can already tell she feels like she did nothing wrong.

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• How do I remotely run a Powershell workflow that uses a custom module?

  - by drawsmcgraw

  I have a custom Powershell module that I wrote for various tasks. Now I want to craft a workflow whose activities will use commands from the module. Here's my test workflow: workflow New-TestWorkflow{ InlineScript { Import-Module custom.ps1 New-CommandFromTheModule } } Then I run the workflow with: New-TestWorkflow -PSComputerName remoteComputer When I do this, the import fails because it can't find the module. I imagine this is because the workflow is executing on the remote machine, where my module does not exist. I can see myself running this across many machines so I'd really rather not have to install this module and maintain it on all of the machines. Is there some way to have my module in a central place and use it in workflows?

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• TCP Sessions and IP Changes

  - by Kyle Brandt

  What happens to a TCP session when the IP of a client changes? I did a simple test of having netcat listen on a port, and connecting to that port from a client machine. I then changed the IP of the client while that nc session was open and sent some data, no data was received by server after changing the IP. I know they are different layers, but does TCP use IPs for part of how it distinguishes sessions? Does my example not work because of how the application handles it, or is this not working because of something happening at TCP/IP/Ethernet layers? Does this depend on the OS implementation? ( I am most interested in Linux at the moment)

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• Mongo Client RedHat EL5 UT8 Support

  - by Michael Irey

  # mongo MongoDB shell version: 1.6.4 Fri Mar 16 11:55:46 *** warning: spider monkey build without utf8 support. consider rebuilding with utf8 support connecting to: test Mongo Server seems to handle the utf8 characters fine, as well as my php-mongo-client driver. But when I try to query a record that has a utf8 character from the mongo command line client I get: > db.Users.find({age:33}); error:non ascii character detected Fri Mar 16 11:55:43 mongo got signal 11 (Segmentation fault), stack trace: Fri Mar 16 11:55:43 0x440b50 0x3664c302d0 0x3f47e7b6e0 0x3f47e83bbd 0x3f47e254f3 0x3f47e25660 0x3f47e256ee 0x3f47e25792 0x3f47e2876e 0x4b031d 0x443b72 0x445476 0x3664c1d994 0x43fd39 mongo(_Z12quitAbruptlyi+0x3b0) [0x440b50] /lib64/libc.so.6 [0x3664c302d0] /usr/lib64/libjs.so.1 [0x3f47e7b6e0] /usr/lib64/libjs.so.1(js_CompileTokenStream+0x3d) [0x3f47e83bbd] /usr/lib64/libjs.so.1 [0x3f47e254f3] /usr/lib64/libjs.so.1(JS_CompileUCScriptForPrincipals+0x60) [0x3f47e25660] /usr/lib64/libjs.so.1(JS_EvaluateUCScriptForPrincipals+0x3e) [0x3f47e256ee] /usr/lib64/libjs.so.1(JS_EvaluateUCScript+0x22) [0x3f47e25792] /usr/lib64/libjs.so.1(JS_EvaluateScript+0x6e) [0x3f47e2876e] mongo(_ZN5mongo7SMScope4execERKSsS2_bbbi+0xed) [0x4b031d] mongo(_Z5_mainiPPc+0x14a2) [0x443b72] mongo(main+0x26) [0x445476] /lib64/libc.so.6(__libc_start_main+0xf4) [0x3664c1d994] mongo(__gxx_personality_v0+0x269) [0x43fd39] Any ideas or suggestions would be welcome

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• How is it possible to list all folders that a particular user/group has permissions on?

  - by Lord Torgamus

  Is it possible to list all folders/files that a given group has explicit permissions on, for a machine running Windows Server 2003? If so, how? It would be nice to see inherited permissions as well, but I could do with just explicit permissions. A little background: I'm trying to update groups/permissions on a test server. One of the groups, Devs, wasn't implemented correctly when it was created, and my goal is to remove it from the system. It has been replaced by LeadDevelopers, which has permissions on many — but naturally not all — of the same folders. I want to make sure that I don't accidentally orphan any folders or cause any other issues when I remove Devs. It did have some admin-level permissions.

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• Unauthorized access error to html pages in IIS 7.0

  - by George2

  I am using VSTS 2008 + C# + .Net 3.5 + IIS 7.0. I have created a new web site and put an html file into the directory. And when I use browse function in IIS manager to browse the html file, I met with the following error, any ideas what is wrong? BTW: I am very confused about unauthorized error since I run the worker process under administrator account. From the error message, I am confused why the logon method is anonymous and not using administrator account? HTTP Error 401.3 - Unauthorized You do not have permission to view this directory or page because of the access control list (ACL) configuration or encryption settings for this resource on the Web server. Module IIS Web Core Notification AuthenticateRequest Handler StaticFile Error Code 0x80070005 Requested URL http://localhost:80/a.html Physical Path C:\test\simplehosttest\a.html Logon Method Anonymous Logon User Anonymous thanks in advance, George

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• Best use of new express card on Windows

  - by jckdnk111

  I just bought a 48GB SSD express card for my laptop and I am trying to decide how best to use it. I will be running some sort of virtualization (prob VirtualBox) to test / learn Windows Server administration. I am running Windows 7 Ultimate 64 bit. I have 4GB of RAM and a 7200 RPM SATA hard disk. The express card will read at 115MB/s and write at 65MB/s. So how best to use this new disk? Readyboost, relocate pagefile, store VM disks, mix / match?

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• ADF Logging In Deployed Apps

  - by Duncan Mills

  Harking back to my series on using the ADF logger and the related  ADF Insider Video, I've had a couple of queries this week about using the logger from Enterprise Manager (EM). I've alluded in those previous materials to how EM can be used but it's evident that folks need a little help.  So in this article, I'll quickly look at how you can switch logging on from the EM console for an application and how you can view the output.  Before we start I'm assuming that you have EM up and running, in my case I have a small test install of Fusion Middleware Patchset 5 with an ADF application deployed to a managed server. Step 1 - Select your Application In the EM navigator select the app you're interested in: At this point you can actually bring up the context ( right mouse click) menu to jump to the logging, but let's do it another way.  Step 2 - Open the Application Deployment Menu At the top of the screen, underneath the application name, you'll find a drop down menu which will take you to the options to view log messages and configure logging, thus: Step 3 - Set your Logging Levels  Just like the log configuration within JDeveloper, we can set up transient or permanent (not recommended!) loggers here. In this case I've filtered the class list down to just oracle.demo, and set the log level to config. You can now go away and do stuff in the app to generate log entries. Step 4 - View the Output  Again from the Application Deployment menu we can jump to the log viewer screen and, as I have here, start to filter down the logging output to the stuff you're interested in.  In this case I've filtered by module name. You'll notice here that you can again look at related log messages. Importantly, you'll also see the name of the log file that holds this message, so it you'd rather analyse the log in more detail offline, through the ODL log analyser in JDeveloper, then you can see which log to download.

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• How do I use rsync to sync my repo on my mac to university server where I have ssh access?

  - by snihalani

  I need to use my university's ssh access and run my programs there for testing. I don't have sudo access there. It doesn't have vncserver there either. I would work with vim and make but I need git at least. Now I am looking into rsync to sync my current source directory into a remote directory and I'll ssh into the directory and run my make file to test it. I am looking at the man page of rsync and it looks very complicated. Can anyone please help me with this? I have googled in superuser and all commands seem different for different cases. Can anyone please help me with this?

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• Does lesser wide screen fit better than a large one?

  - by artaxerxe

  About 3 weeks ago I changed my job. At the former workplace, I had 2 monitors for doing programming (GUI and core programming). Here, at the place where I am, the administrators gave me a laptop (15.6 inch) and wanted to provide me a wider screen additional to the laptop's one. I said that for now I want to test as it is, with the laptop's screen. I also want to mention, that in the current job I'm not targeted for GUI development. My feeling until now (but it can be just a feeling) is that working on this single not so wide screen, I'm not so weary after a full day work as I was with 2 wide monitors. Does anyone have any recommendations on this problem? Does lesser screens (in my case exclusively 15.6 inch vs 20 inch screens) affect your eyes? If anyone have any knowledge about, please feel free to say what's your opinion. P.S. I think that's a good site for this kind of question. Otherwise, please guide me on what site from StackExchange should I put it. Thanks.

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• Can I use Cygwin as a replacement for Ubuntu, for bash script testing?

  - by Jeroen De Meerleer

  Next wednesday i'm having an exam on Operating Systems. In this exam there will also be a part bash-scripting. The teacher itself will test the scripts in a Virtual Machine running Ubuntu. Myself, however, I'm having serious troubles with running the latest Ubuntu (14.04 LTS) on a Virtual Machine (there are troubles with gnome running very slow). So I'm thinking about using Cygwin, which is doing the job great for another course. The teacher already confirmed I can use that, but I'm thinking he doesn't know it at all. I've already tested the scripts we made in class and they're all running without errors. But I'm quite sure there are some things I have to mind on. My question: would you use Cygwin as a replacement for the Ubuntu VM? Or should I stick it with the VM (maybe by using a different config/platform).

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• NFS mount of /var/www to OS X

  - by ploughguy

  I have spent 2 hours trying to create an NFS mount from my Ubuntu 10.04 LTS server to my OS X desktop system. Objective: three way file compare between the code base on the Mac, the development system on the local Linux test system, and the hosted website. The hosted service uses cpanel so I can mount a webdisk - easy as pie - took 10 seconds. The local Ubuntu box, on the other hand - nothing but pain and frustration. Here is what I have tried: In File Browser, navigate to /var/www/site and right-click. Select share this folder. Enter sharename wwwsite and a comment. Click button "Create Share". Message says - you can only share file systems you own. There is a message on how to fix this, but the killer is that this is sharing by SMB. It will change the LFs to CR-LFs which will affect the file comparison. So forget this option. In a terminal window, run shares-admin (I have not been able to convince it to give me the "Shared Folders" option in the System Administration window - Maybe it is somewhere else in the menu, but I cannot find it) define an NFS export. Enter the path /var/www/site, select NFS enter the ip address of the iMac and save. On the mac, try to mount the file system using the usual methods - finder, command line "mount" command - not found. Nothing. Tried restarting the linux box in case there is a daemon that needs restarting - nothing. So I have run out of stuff to do. I have tried searching the documentation - it is pretty basic. The man page documentation is as opaque as ever. Please, oh please, will someone help me to get this @38&@^# thing to work! Thanks for reading this far... PG.

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• recovering raid 0 hard disk

  - by Hiawatha

  I bumped to a huge (for me) problem. I was running dual boot system (win 7 / linux) and at some point I decided to test fedora ( I am new in Linux ). My hard disk conf: 3 hard disks each 1 TB, 2 set to raid 0 with windows running on it and 1 for linux. After installing it from live usb I found out that windows 7 is not in grub anymore and while booting shows raid error. I installed back Ubuntu and ran Disk Utility and checked now I have one disks (raid 0) failed (READ) error. First has 5 bad sectors and second has 1 bad sector. And now I dont know what to do and how to repair. further I dont know which data i could provide to get help. I tried ntfsfix and got this output: Mounting volume... NTFS signature is missing. FAILED Attempting to correct errors... NTFS signature is missing. FAILED Failed to startup volume: Invalid argument NTFS signature is missing. Trying the alternate boot sector Unrecoverable error Volume is corrupt. You should run chkdsk. #sudo ntfs-3g -o force,rw /dev/sdb /media/windows NTFS signature is missing. Failed to mount '/dev/sdb': Invalid argument The device '/dev/sdb' doesn't seem to have a valid NTFS. Maybe the wrong device is used? Or the whole disk instead of a partition (e.g. /dev/sda, not /dev/sda1)? Or the other way around?

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• Can mod_rewrite Conditions/Rules be executed in random order?

  - by Tom

  I have some mod rewrite rules that test for the presence of a file on various NFS mounts and I would like that the tests occur randomly, as a very rudimentary way to distribute load. For example: RewriteEngine on RewriteCond %{REQUEST_URI} ^/(.+)$ RewriteCond /mnt/mount1/%1 -f RewriteRule ^/(.+)$ /mnt/mount1/$1 [L] RewriteCond %{REQUEST_URI} ^/(.+)$ RewriteCond /mnt/mount2/%1 -f RewriteRule ^/(.+)$ /mount2/$1 [L] RewriteCond %{REQUEST_URI} ^/(.+)$ RewriteCond /mnt/mount3/%1 -f RewriteRule ^/(.+)$ /mnt/mount3/$1 [L] RewriteCond %{REQUEST_URI} ^/(.+)$ RewriteCond /mnt/mount4/%1 -f RewriteRule ^/(.+)$ /mnt/mount4/$1 [L] As far as I understand mod_rewrite Apache will look for the file on /mnt/mount1, then mount2, mount3 and so on. Can I randomize this on each request? I understand this is an odd request but I need a creative solution to some unforeseen downtime. On a side note, do I need to redeclare RewriteCond %{REQUEST_URI} ^/(.+)$ each time like I have done? Thanks

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• How can I read a comma delimited text file in a Windows batch file?

  - by Sms

  I can get it to read the text file until it becomes a comma delimited text file. I would like to read the two variables on each line and test each one with a If statement for another condition. Problem is I can't read the variables properly. Tried many things but here is what I will post. Timeouts are to see what's happening: for /f "tokens=*" %%a in (TestText.txt) do ( timeout /t 1 echo %%a is the present variabe timeout /t 2 if %%a=="One","1" echo Match for "One","1" timeout /t 3 if %%a=="One""1" echo Match for "One","1" timeout /t 4 if %%a=="One" echo Match for "One" timeout /t 5 if %%a=="1" echo Match for "1" timeout /t 6 ) TestText.txt "One","1" "Two","2" "Three","3" "Four","4" OUTPUT: "One","1" is the present variabe

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• Bug: unable to handle kernel NULL pointer dereference at

  - by maria

  I have recently installed new system on my disc, Ubuntu 12.04. Installation proceeded without problems, I started installing additional software and put data from other discs. I had already two times bug report, it was quite long, and I have no idea how to acces to log file (which probably is somewhere saved) and since I had to switch off the computer using the button, anything else was possible, here is just a small part of it (what I've noted on paper) could not write bytes: Broken pipe speach dicpatcher disabled: edit etc/default/speach-dispatcher saned disabled: edit .... and than: BUG: unable to handle kernel NULL pointer dereference at 0000009c I've run Memory test in GRUB, everything is fine. First time it occured when I was using rsync, second time when I was trying to install texlive. Should I install whole system once again? Or can it be hardware problem? Or something else? If there is any hardware details which may be relevant, please ask, since I have no idea what is happening, I don't know what kind of information could be useful. Thanks P.S. dmesg output:

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• HP C4400 is paper out

  - by borges

  I have a HP C4400 printer and it claims to be out of paper (which is not true) and don't even try to pull the paper. I have already followed these instructions with no success: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00786157&cc=us&lc=en&dlc=en&product=3418705 Two strange things: I used the printer successfully minutes before this problem. It prints its test page successfully (by pressing the cancel and color buttons simultaneously). How can I fix this problem? PS: Sorry about the creepy english.

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• Multiple SSL on same IP [closed]

  - by kadourah

  Possible Duplicate: Multiple SSL domains on the same IP address and same port? I have the following situation: first domain: test.domain.com IP: 1.2.3.4 Port: 443 SSL: Purchased from godaddy and specific to that domain Works fine no issues. I would like to add another site: test2.domain.com IP: the same Port: can be different SSL: different since I can't use the SSL above because it's specific to the site above. Now, when I add the HTTPS binding to the second site with IP:Port combination it appears to always load the first SSL ignoring the second certificate. How can I add second SSL binding to the same IP using a "different" certificate? Can this be done?

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• MySQL documentation writer wanted

  - by stefanhinz

  As MySQL is thriving and growing, we're looking for an experienced technical writer located in Europe or North America to join the MySQL documentation team.For this job, we need the best and most dedicated people around. You will be part of a geographically distributed documentation team responsible for the technical documentation of all MySQL products. Team members are expected to work independently, requiring discipline and excellent time-management skills as well as the technical facilities to communicate across the Internet.Candidates should be prepared to work intensively with our engineers and support personnel. The overall team is highly distributed across different geographies and time zones. Our source format is DocBook XML. We're not just writing documentation, but also handling publication. This means you should be familiar with DocBook, and willing to learn our publication infrastructure.Candidates should therefore be interested not just in writing but also in the technical aspects of publishing documentation. Regarding your initial areas of authoring, those would be MySQL Cluster, MySQL Enterprise Monitor and Backup, and various parts of the MySQL server documentation (also known as the MySQL Reference Manual). This means you should be familiar with MySQL in general, and preferably also with MySQL Cluster and the MySQL Enterprise offerings.Other qualifications: Native English speaker 3 or more years previous experience in writing software documentation Excellent written and oral communication skills Ability to provide (online) samples of your work, e.g. books or articles Curiosity to learn new technologies Familiarity with distributed working environments and versioning systems such as SVN Comfortable with working on multiple operating systems, particularly Windows, Mac OS X, and Linux Ability to administer own workstations and test environment If you're interested, contact me under [email protected].

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• Oracle EZConnect in Mediawiki

  - by raindog308

  Mediawiki supports Oracle and I'm trying to configure it in the installer. The installers says you can use EZConnect...something like: user/pass@//server.example.com/dbname or since the installer has fields elsewhere for user/pass server.example.com/dbname The installer includes a link to the EZConnect docs: http://docs.oracle.com/cd/E11882_01/network.112/e10836/naming.htm. All the examples in that doc include a forward slash. But every combination I've tried results in an error like this: Invalid database TNS "sever.example.com/service_name". Use only ASCII letters (a-z, A-Z), numbers (0-9), underscores (_) and dots (.). I can't find any examples of EZConnect that don't include a forward slash. That error is from Mediawiki, not Oracle. I'm tailing the listener log and there is no connection made - Medaiwiki is returning an error without trying to connect. I'm using php OCI8 with the Oracle instant client. I don't have a tnsnames.ora setup for this client - which is kind of the point of EZConnect. I did write a test php script that connects via oci_connect just fine. Has anyone configured Mediawiki to use Oracle with EZConnect? If so, what did you use in the installer?

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• Controlling access to my API using SSH public key (not SSL)

  - by tharrison

  I have the challenge of implementing an API to be consumed by relatively non-technical clients -- pasting some sample code into their WordPress or homegrown PHP site is probably as much as we can ask. Asking them to install SSL on their servers ain't happening. So I am seeking a simple yet secure way to authenticate API clients. OAuth is the obvious solution, but I don't think it passes the "simple" test. Adding a client id and hashed secret as a parameter to the requests is closer -- it's not hard to do md5($secret . $client_id) or whatever the php would be. It seems to me that if client requests could use the same approach as SSH public keys (client gives us a key from their server(s) there should be some existing magic to make all of the subsequent transactions transparently work just as regular HTTP API requests. I am still working this out (obviously :-), so if I am being an idiot, it would be nice to know why. Thanks!

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• aireplay - reading but not sending

  - by oneat

  I'm trying aircrack injection, everything is working I authenticated, but aireplay is not working aireplay-ng -3 -b 00:12:2A:01:74:05 -h 78:e4:00:87:71:8b mon0 18:53:03 Waiting for beacon frame (BSSID: 00:12:2A:01:74:05) on channel 7 Saving ARP requests in replay_arp-0817-185303.cap You should also start airodump-ng to capture replies. Read 4988 packets (0 ARPs, 4 ACKs), sent 0 packets...(0 pps) Why isn't it working? Why isn't it sending packets? 03:00.0 Network controller: Atheros Communications Inc. AR928X Wireless Network Adapter (PCI-Express) (rev 01) I tested injection on injection test in aircrack tutorial, despite driver wasn't patched.

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• Nameserver Problem

  - by Ruel

  I installed Virtualmin GPL with BIND, etc. I created a virtual host for my main domain, and edited the zone file, added the A records for the nameservers ns1.mydomain.com and ns2.mydomain.com. All looks good from the VPS, whenever I do a dig or nslookup, all seems fine, returning correct details. But when I test externally, there are no results. I tried several sites such as intodns, etc. It says my nameservers doesn't point to any IP. I have registered my nameservers with the appropriate IP in my registrar, and I even contacted support to verify this, and they told me that the registration was successful, but when they dig my nameservers, there's no ip address. I can also connect to my server IP's port 53. Also, I know that the DNS propagation is 24-48 hours. But there has to be some server that can return the correct results by now. Please lead me to the right direction, thanks.

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