similar to: Scaling the database for write intensive application

I am developing a large scale financial application which is going to be very intensive write-wise, and use a lot of transactions. I can see how the the web and application servers can be scaled and load balanced quite easily, but not the database tier. The setups I have looked at so far seem to deal with coping with a lot of reads, and minimal writes - this maybe because they are largely

Hi I was interested to see how Mongrel uses Lex/Yacc to parse the HTTP requests using a Regal generated parser. I downloaded the source but do not see the lex and yacc files...

A couple of questions please: What is the benefit of having more than one Mongrel/Rails instance on the same machine, could one instance not serve as many requests as say three instances? Is Mongrel Cluster a Apache add-in (like mod_*) or a separately running load balancer which runs on a separate port, I could not work it out from the sample Apache config... |# Redirect all non-static

Hi, Does anyone have the Mint stats package setup with their Rails application. I have uploaded Mint to the public folder, but when I try and request domain.com/mint/index.php the page is served as a download instead of being processed by mod_php. Im guessing this isn''t really a Mongrel problem but what I actually need to do is prevent Apache proxying certain requests to Mongrel.

Please note this message is not related to my previous one from yesterday, this is on a different server (textdrive server). I have only one mongrel application running but ''randomly'' it will go down, the mongrel.log file shows: ERROR: undefined method ''request_uri'' for #<URI::Generic:0x5383948 URL:*> ERROR: bad URI(is not URI?): c:\boot.ini [FATAL]

Hi I''m trying to convice a client to use Rails for a new commercial web application. At the demo/preliminary stages, our monthly hosting budget is 20$-40$ (naturally it would increase with consumer demands). We need a fast, reliable host at that cost range. The application has to be fast, especially the AJAX parts. Also there''s a lot of database-querying involved, so the

My question is about the static files in the Rails public folder. These files should be served by Apache instead of Mongrel, so do I need to upload these files to Apache''s htdoc''s or will Apache cache them the first time they are requested from Mongrel... Im not sure how this works? Many thanks.

On Tue, 21 Feb 2017 09:49:39 -0500 KT Walrus wrote: > I just read this blog: https://mrotaru.wordpress.com/2013/10/10/scaling-to-12-million-concurrent-connections-how-migratorydata-did-it/ <https://mrotaru.wordpress.com/2013/10/10/scaling-to-12-million-concurrent-connections-how-migratorydata-did-it/> about scaling to 12 Million Concurrent Connections on a single server and it got me

I have started to experiment with Liquid templates and all goes fine as long as I just display my stuff. But I want to get user input (using forms), and I couldn''t figure out so far whether and how liquid facilitates the use of forms, something like the form helper tags in .rhtml. Anybody knows about that ? -- Roberto Saccon - http://rsaccon.com -------------- next part --------------

First off Windows, because actually what I appear to be getting is a Rails error which only occurs when I use Mongrel, using Webrick I do not get this error. I start Mongrel using: mongrel_rails start I have mongrel, win32-services and mongrel-service gems installed even through Im not using mongrel as a service at the moment. The whole application works apart from one action. The error I get

> > > Now, under CentOS 7, I see we have two files controlling memcached under > the new sysctl system. At least, using sysctl is new to me! > > I see we have this file: > > [root at web1:~] #cat /usr/lib/systemd/system/memcached.service > [Unit] > Description=Memcached > Before=httpd.service > After=network.target > > [Service] > Type=simple >

Hi all, I need to install the latest memcached version (1.4.20) on a number of machines in this environment. There are only rpm's of this app for RHEL 6. But we need to install the latest memcached on a number of RHEL 5 machines. To be specific, they are OEL 5.7 hosts. I've installed all of the developers tools that I would need. But when I go to build the RPM I am getting the

Hi Alberto, With systemd it will be as easy as creating additional unit files ( one for > each memcached instance) with its corresponding config file. That should > allow to stop / start / restart each memcache instance individually while > also being systemd compliant. Thanks for the info and for the examples. It really does make sense the way you explain it. Thanks for letting me

Moving on from the discussion of the fact that length(x)==9 for any POSIXlt object x (which seems diabolically confusing, given that 'c' and '[' are defined for POSIXlt and have the vector-like behavior one would expect), what about having some guidelines for coding and documentation of vector-like classes? (1) a vector-like class should implement functions in groups:

Hey guys, OK so I'm pretty familiar with how to edit an init script for memcached so that I can get multiple memcached 'buckets' when starting up the service. The init script would ususally have multiple lines such as these under the start function: # cache_block /usr/local/bin/memcached -d -m 128 -l `hostname -i` -p 11318 -u daemon -c 8172 -v 2>> /tmp/memcached.log

I just read this blog: https://mrotaru.wordpress.com/2013/10/10/scaling-to-12-million-concurrent-connections-how-migratorydata-did-it/ <https://mrotaru.wordpress.com/2013/10/10/scaling-to-12-million-concurrent-connections-how-migratorydata-did-it/> about scaling to 12 Million Concurrent Connections on a single server and it got me thinking. Would it be possible to scale Dovecot IMAP server

Dear all, I have a function to optimize for a set of parameters and want to set a constraint on only one parameter. Here is my function. What I want to do is estimate the parameters of a bivariate normal distribution where the correlation has to be between -1 and 1. Would you please advise how to revise it? ex=function(s,prob,theta1,theta,xa,xb,xc,xd,t,delta) { expo1=

Hey guys, I'm trying use check_memcached.pl to monitor a couple of memcached services running on two ports. I have my command definition setup like this: # 'check_memcached' command definition define command { command_name check_memcached command_line $USER1$/check_memcached.pl -H $HOSTADDRESS$ -p $ARG1$ } And I have my service definitions setup like this: # Define a

Dear All, could someone please shed some light on the use of the .C or .Fortran function: I am trying load and running on R the following function // psi.cpp -- psi function for real arguments. // Algorithms and coefficient values from "Computation of Special // Functions", Zhang and Jin, John Wiley and Sons, 1996. // // (C) 2003, C. Bond. All rights reserved. // //

I am hoping that someone could post a working example of how they use a ''define'' has in a parameter string because I have been working on this for days to no avail (and googling & checking documentation on puppet & foreman sites. What I am trying to accomplish is to define things within foreman ENC and duplicate the functionality I can get from just using node