cppcms-users — Disussions of users of CppCMS

Re: [Cppcms-users] cppblog and systemd

[Paolo B. <pao...@gm...>]

Sorry, the answer was meant to Marcel, the other email were eaten by
gmail spam filter...

On Mon, Mar 16, 2015 at 12:39 PM, Paolo Bolzoni
<pao...@gm...> wrote:
> I am using nginx, but I need to start the cppcms application
> separately. Am I wrong?
>
> On Mon, Mar 16, 2015 at 10:48 AM, Marcel Hellwig <ke...@co...> wrote:
>> I suppose you are trying to use a port below 1024, because that are root
>> only ports. Try to use an other port.
>>
>> Btw: why don't you use nginx as http server and fast_cgi as recommended
>> by [0]?
>>
>> Greetings,
>> Marcel
>>
>> [0] http://cppcms.com/wikipp/en/page/cppcms_1x_tut_web_server_config
>>
>>
>> ------------------------------------------------------------------------------
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>> news, videos, case studies, tutorials and more. Take a look and join the
>> conversation now. http://goparallel.sourceforge.net/
>> _______________________________________________
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Re: [Cppcms-users] cppblog and systemd

[Paolo B. <pao...@gm...>]

I am using nginx, but I need to start the cppcms application
separately. Am I wrong?

On Mon, Mar 16, 2015 at 10:48 AM, Marcel Hellwig <ke...@co...> wrote:
> I suppose you are trying to use a port below 1024, because that are root
> only ports. Try to use an other port.
>
> Btw: why don't you use nginx as http server and fast_cgi as recommended
> by [0]?
>
> Greetings,
> Marcel
>
> [0] http://cppcms.com/wikipp/en/page/cppcms_1x_tut_web_server_config
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming The Go Parallel Website, sponsored
> by Intel and developed in partnership with Slashdot Media, is your hub for all
> things parallel software development, from weekly thought leadership blogs to
> news, videos, case studies, tutorials and more. Take a look and join the
> conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>

Re: [Cppcms-users] cppblog and systemd

[Artyom B. <art...@ya...>]

Note - you try to use Unix socket factory (not TCP) - make sure you have correct permissions on that socketand you can remove it. Probably it should run under same user as web server - or use TCP/IP instead

 However just changing the executing user the cppblog crashes with a
"address already in use error," here is the log:
Failed: system: Address already in use
0x7f146c5f6ebb:
booster::system::system_error::system_error(booster::system::error_code
const&) + 0x13b in /usr/lib/libcppcms.so.1
0x7f146c2c7bb7: booster::aio::acceptor::bind(booster::aio::endpoint
const&) + 0x67 in /usr/lib/libbooster.so.0
0x7f146c6cfce0:
cppcms::impl::cgi::fastcgi_api_unix_socket_factory(cppcms::service&,
std::string, int) + 0xc0 in /usr/lib/libcppcms.so.1
0x7f146c5f0bac: cppcms::service::setup_acceptor(cppcms::json::value
const&, int, int) + 0x68c in /usr/lib/libcppcms.so.1
0x7f146c5f137e: cppcms::service::start_acceptor(bool) + 0x17e in
/usr/lib/libcppcms.so.1
0x7f146c5f3e19: cppcms::service::run() + 0x29 in /usr/lib/libcppcms.so.1
0x41d036: main + 0x76 in /usr/bin/cppblog
0x7f146b30e800: __libc_start_main + 0xf0 in /usr/lib/libc.so.6
0x41de39: _start + 0x29 in /usr/bin/cppblog

To make the situation even more confusing, if I try to execute via
command line with sudo -u it works fine...

What am I doing wrong? Any idea of what I can try?

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Re: [Cppcms-users] cppblog and systemd

[Artyom B. <art...@ya...>]

First of all according to the error check if somebody uses this port... 
I'm not familiar with systemd but CppCMS service should have all you need
Note:

(a) you can define the user and daemon settings at cppcms level Take a look on this: http://cppcms.com/wikipp/en/page/cppcms_1x_config#daemon(b) you can define user the service runs under in the same section

@Marcel nginx can't start/stop fastcgi service by his own... one of the reasons I really don't like it so you need to configure the service independently. BTW it uses fastcgi according to the backtrace

Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
 
      From: Marcel Hellwig <ke...@co...>
 To: cpp...@li... 
 Sent: Monday, March 16, 2015 11:48 AM
 Subject: Re: [Cppcms-users] cppblog and systemd
   
I suppose you are trying to use a port below 1024, because that are root
only ports. Try to use an other port.

Btw: why don't you use nginx as http server and fast_cgi as recommended
by [0]?

Greetings,
Marcel



[0] http://cppcms.com/wikipp/en/page/cppcms_1x_tut_web_server_config

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Re: [Cppcms-users] cppblog and systemd

[Marcel H. <ke...@co...>]

I suppose you are trying to use a port below 1024, because that are root
only ports. Try to use an other port.

Btw: why don't you use nginx as http server and fast_cgi as recommended
by [0]?

Greetings,
Marcel

[0] http://cppcms.com/wikipp/en/page/cppcms_1x_tut_web_server_config

[Cppcms-users] cppblog and systemd

[Paolo B. <pao...@gm...>]

I wanted to write a systemd file to execute cppblog, here is the content:

-------- >8
[Unit]
Description=A high performance blog based on cppcms
After=network.target

[Service]
Type=simple
WorkingDirectory=/var/blog
ExecStart=/usr/bin/cppblog -c config.js

[Install]
WantedBy=multi-user.target
-------- >8

As you can see it is very simple and apparently it works, however I
would like to execute cppblog as a http user, so I added User=http in
the [Service] section.

However just changing the executing user the cppblog crashes with a
"address already in use error," here is the log:
Failed: system: Address already in use
0x7f146c5f6ebb:
booster::system::system_error::system_error(booster::system::error_code
const&) + 0x13b in /usr/lib/libcppcms.so.1
0x7f146c2c7bb7: booster::aio::acceptor::bind(booster::aio::endpoint
const&) + 0x67 in /usr/lib/libbooster.so.0
0x7f146c6cfce0:
cppcms::impl::cgi::fastcgi_api_unix_socket_factory(cppcms::service&,
std::string, int) + 0xc0 in /usr/lib/libcppcms.so.1
0x7f146c5f0bac: cppcms::service::setup_acceptor(cppcms::json::value
const&, int, int) + 0x68c in /usr/lib/libcppcms.so.1
0x7f146c5f137e: cppcms::service::start_acceptor(bool) + 0x17e in
/usr/lib/libcppcms.so.1
0x7f146c5f3e19: cppcms::service::run() + 0x29 in /usr/lib/libcppcms.so.1
0x41d036: main + 0x76 in /usr/bin/cppblog
0x7f146b30e800: __libc_start_main + 0xf0 in /usr/lib/libc.so.6
0x41de39: _start + 0x29 in /usr/bin/cppblog

To make the situation even more confusing, if I try to execute via
command line with sudo -u it works fine...

What am I doing wrong? Any idea of what I can try?

Re: [Cppcms-users] pending request

[Joerg S. <jo...@br...>]

On Sun, Mar 15, 2015 at 06:54:09PM +0000, Artyom Beilis wrote:
> In any case FastCGI contains "end of data termination" and
> content length isn't required by HTTP, actually HTTP/1.1 supports
> chunked transfer encoding to eliminate need of content-lenght.

It is still helpful for clients if the server sends content-length, if
it is known at the beginning of the transfer. For HTTP/1.0, it is the
only way to support keep-alive and to reliably detect the end of
transmission. For HTTP/1.1, it reduces the overhead by avoiding chunked
transfer encoding. It also allows progress reports, something sadly too
many sites nowadays break even for static content. There are some broken
CDNs even. In short, if you know the size of the content, set
content-length.

But that's an unrelated topic, I still don't even understand OP's
original problem.

Joerg

Re: [Cppcms-users] pending request

[Artyom B. <art...@ya...>]

????
In any case FastCGI contains "end of data termination" andcontent length isn't required by HTTP, actually HTTP/1.1 supportschunked transfer encoding to eliminate need of content-lenght.
In any way - my personal recommendation nginx or lighttpd... go with lighttpd. Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
 
      From: Василий Теркин <par...@gm...>
 To: cpp...@li... 
 Sent: Sunday, March 15, 2015 6:39 PM
 Subject: Re: [Cppcms-users] pending request
   
i beg your pardon, guysnginx:
fastcgi_pass  localhost:5555;   ->  fastcgi_pass 127.0.0.1:5555;
 did the trick.
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Re: [Cppcms-users] pending request

[Василий Т. <par...@gm...>]

i beg your pardon, guys
nginx:
fastcgi_pass  localhost:5555;   ->  fastcgi_pass 127.0.0.1:5555;
 did the trick.

Re: [Cppcms-users] pending request

[Василий Т. <par...@gm...>]

content-length and nginx's keepalive_timeout (initiallt it was close to 1
minute.. who knows) do not help, GET and POST requests behave the same
i'm stuck with it :(

Re: [Cppcms-users] pending request

[Василий Т. <par...@gm...>]

it looks like about content-length.. I've changed requests from get to post
to exclude browser caching - there is not content-length header in
response. Never seen content_length() in cppcms examples.. What is the best
way to get the size of json object being passed to response() ?

[Cppcms-users] pending request

[Василий Т. <par...@gm...>]

Hello everybody.
I've got strange behaviour of cppcms (or nginx?).
The browser sets pending state for ajax request to cppcms fastcgi app with
caution "Provisional headers are shown".
*Exactly* 1 min later the response come back *successfully*. This is about
both firefox and google chrome. And both waits for exactly 1 minute.
Nginx log fills with such kind of messages:
2015/03/14 16:40:09 [error] 3824#0: *200 upstream timed out (110:
Connection timed out) while connecting to upstream, client: 192.168.88.10,
server: my.server, request: "POST /ajax/user_corner HTTP/1.1", upstream:
"fastcgi://[::1]:5555", host: "my.server", referrer: "http://my.server/".

nginx conf
    location ~ /ajax/.+ {
        fastcgi_pass  localhost:5555;
        fastcgi_pass_header "X-Accel-Redirect";
        add_header Cache-Control "max-age=0, no-cache, no-store";
        fastcgi_split_path_info          ^(.*/ajax)(.+)$;
        fastcgi_param   PATH_INFO
 $fastcgi_script_name$fastcgi_path_info;
        include fastcgi_params;
    }

cppcms app conf
...
    "session" : {
        "expire" : "renew",
        "timeout" : 604800,
        "location" : "client",
        "client" : {
            "hmac" : "sha1",
            "hmac_key" : "my key"
        },
        "cookies" : {
            "prefix" : "mantra"
        }
    },
    "service" : {
        "api" : "fastcgi",
        "port" : 5555,
        "ip" : "127.0.0.1",
        "worker_processes" : 0
    },
    "daemon" : {
        "enable" : false,
        "lock" : "/home/me/test.lock",
        "user" : "nginx",
        "group" : "nginx"
    },
    "cache" : {
        "backend" : "thread_shared",
        "limit" : 128
    },
...
Cppcms console is lack of errors. The app is the simplest synchronous one.
It looks like cppcms does not respond to request.
1 more moment: if i refresh the page in series (forcing ajax call), 1 pass
is successfull, another one is not.
Some part (which one?) of chain creates pause for 1 min
=> everybody waits for it to finish while cppcms app already done
=> another call (on refresh) is OK.
Digging into google does not help :(
Please, someone..

Re: [Cppcms-users] HttpOnly cookie

[Artyom B. <art...@ya...>]

No there is no such a property on cppcms cookies...
HttpOnly is in general non-standard, broken, badly supported by browsers and best not to be used at all - feeling false safely.
So it isn't included. Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
 
      From: Василий Теркин <par...@gm...>
 To: cpp...@li... 
 Sent: Tuesday, March 10, 2015 3:16 PM
 Subject: [Cppcms-users] HttpOnly cookie
   
Hello.Is there a way to create HttpOnly cookie?Thanks.
Andrey L.
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[Cppcms-users] HttpOnly cookie

[Василий Т. <par...@gm...>]

Hello.
Is there a way to create HttpOnly cookie?
Thanks.

Andrey L.

Re: [Cppcms-users] G-WAN integration experience

[Artyom B. <art...@ya...>]

1st of all CppCMS is web-server agnostic and supports standard proticols like FastCGI or SCGI.2nd I don't think that in real world you'll get much advantage over nginx or lighttpd3rd.. From a fast glance GWAN "embeds" application (like apache module) and that how it gets the "performance"  So (a) I don't think that CppCMS can be integrated into GWAN unless standard protocol is supported by GWAN (fastcgi/scgi)(b) I don't think that it would give any advantage over lets say lighttpd or nginx when using protocil(c) Why to use closed source proprietary web server? Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
 
      From: Alexey Omelchenko <aom...@gm...>
 To: cppcms-users <cpp...@li...> 
 Sent: Tuesday, March 3, 2015 1:54 AM
 Subject: [Cppcms-users] G-WAN integration experience
   
Hello community,

G-WAN shows outstanding performance on benchmarks.
Does anybody here has real life experience integrating G-WAN with CPPCMS?

Thanks,
Alexey.

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Re: [Cppcms-users] G-WAN integration experience

[Tolga H. <fas...@gm...>]

And impossible to debug and fix as its proprietary.

On Tue, Mar 3, 2015, 03:02 Tolga HOŞGÖR <fas...@gm...> wrote:

> Last time I checked (over a year ago) gwan was segfaulting on its own
> examples with a simple apache bench stress test FYI.
>
> On Tue, Mar 3, 2015, 01:55 Alexey Omelchenko <aom...@gm...> wrote:
>
>> Hello community,
>>
>> G-WAN shows outstanding performance on benchmarks.
>> Does anybody here has real life experience integrating G-WAN with CPPCMS?
>>
>> Thanks,
>> Alexey.
>> ------------------------------------------------------------
>> ------------------
>> Dive into the World of Parallel Programming The Go Parallel Website,
>> sponsored
>> by Intel and developed in partnership with Slashdot Media, is your hub
>> for all
>> things parallel software development, from weekly thought leadership
>> blogs to
>> news, videos, case studies, tutorials and more. Take a look and join the
>> conversation now. http://goparallel.sourceforge.net/
>> _______________________________________________
>> Cppcms-users mailing list
>> Cpp...@li...
>> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>
>

Re: [Cppcms-users] G-WAN integration experience

[Tolga H. <fas...@gm...>]

Last time I checked (over a year ago) gwan was segfaulting on its own
examples with a simple apache bench stress test FYI.

On Tue, Mar 3, 2015, 01:55 Alexey Omelchenko <aom...@gm...> wrote:

> Hello community,
>
> G-WAN shows outstanding performance on benchmarks.
> Does anybody here has real life experience integrating G-WAN with CPPCMS?
>
> Thanks,
> Alexey.
> ------------------------------------------------------------
> ------------------
> Dive into the World of Parallel Programming The Go Parallel Website,
> sponsored
> by Intel and developed in partnership with Slashdot Media, is your hub for
> all
> things parallel software development, from weekly thought leadership blogs
> to
> news, videos, case studies, tutorials and more. Take a look and join the
> conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>

[Cppcms-users] G-WAN integration experience

[Alexey O. <aom...@gm...>]

Hello community,

G-WAN shows outstanding performance on benchmarks.
Does anybody here has real life experience integrating G-WAN with CPPCMS?

Thanks,
Alexey.

[Cppcms-users] ADL - Re: ambiguous overload with boost and booster

[augustin <aug...@ov...>]

On Friday, February 20, 2015 07:36:48 PM augustin wrote:

> boost::ptr_list<categories_form>
 
> categories_form inherits from cppcms::form.

> void boost::checked_delete(const categories_form*)
> void booster::checked_delete(const categories_form*)
 

Well, now I know it's cause by the C++ language feature called Argument 
Dependent Lookup  (ADL), which I previously didn't know about.

Now I know what causes the bug, but I still don't know how to 'fix' it, or 
work my way around it.

Can I configure cmake to let it now not to look into the booster headers?
Any other way to deal with such situations?

Back to the drawing board, rethinking my class layout...



augustin !++

[Cppcms-users] ambiguous overload with boost and booster

[augustin <aug...@ov...>]

Hello,

I am trying to use boost, but booster is wrecking havock.



I have this boost ptr list:

boost::ptr_list<categories_form> 

categories_form inherits from cppcms::form.

When I compile, I get the error:


/usr/include/boost/ptr_container/clone_allocator.hpp:56:9:
error: call of overloaded 
'checked_delete(const categories_form*&)' is ambiguous

Candidates are:

/usr/include/boost/checked_delete.hpp:29:31:
void boost::checked_delete(const categories_form*)

and:

/usr/local/include/booster/checked_delete.h:25:31:
void booster::checked_delete(const categories_form*)


Note the include files.
The only difference is boost vs booster: 
boost::checked_delete(...)
booster::checked_delete(...)

Now, I had to install booster to install cppcms.

Also, booster does not implement ptr_list:

$ locate ptr_list.hpp
/usr/include/boost/ptr_container/ptr_list.hpp
/usr/include/boost/ptr_container/serialize_ptr_list.hpp
/usr/include/boost/spirit/home/support/detail/lexer/containers/ptr_list.hpp

I wonder why the compiler is looking into the booster:: namespace.

How do I configure cmake or whatever to prevent confusing the compiler?


thanks

augustin ?++

Re: [Cppcms-users] CppDB with MySQL UTF8 - Configuration options

[augustin <aug...@ov...>]

On Sunday, September 11, 2011 08:37:10 PM 陈抒 wrote:
> To get the correct Chinese words from MySQL via CppDB,make sure you add
> ";set_charset_name=utf8" into connection string.There is one example below:
> #include <string>
> #include <iostream>
> using namespace std;
> #include <cppdb/frontend.h>
> 
> int main(int argc,char* argv[]){
> locale new_locale(locale("zh_CN.utf8"));
>  locale old_loc = locale::global(new_locale);
> try{
> string
> connection_string("mysql:host=192.168.1.15;database=d01;user=data;password=
> skst;set_charset_name=utf8"); cppdb::session session(connection_string);
> string sql="select address from tape_local limit 0,1";
>  cppdb::result res = session<<sql;
> while(res.next()){
> cout<<res.get<string>("address")<<endl;
>  }
> }catch(std::exception const& ex){
> cout<<ex.what()<<endl;
>  }catch(...){
> cout<<"Unknown exception"<<endl;
> }
> }
> 
> I also wrote one document in Chinese here:
> http://blog.csdn.net/sheismylife/article/details/6767770

謝謝陈抒, 太感謝你.
I struggled with that for a long time.
Thank you for sharing the solution.


Artyom:

I had previously checked the documentation here:
http://cppcms.com/sql/cppdb/connstr.html 
However, there are some parts that I hadn't understood, and there are some 
parts that are not documented.

I am willing to prepare a patch to improve the documentation. However, there 
are some parts that I still don't know or understand. Can we work together to 
improve the official documentation? [Note, as previously mentioned, I cannot 
login at sourceforge. It won't allow me].

set_charset_name is a cppdb construct. It is not found in the MySQL official 
documentation, although MYSQL_SET_CHARSET_NAME is.
Should we document within cppdb itself all the mysql configuration options?
Or should we link to the mysql official documentation and let users know where 
to check to see which options are available?

Also, I checked the other backends (postgres, etc.), and didn't find any 
comparable support for connection string options. Don't other backends support 
such options? 


yours,

augustin.
新年快樂 
















.

Re: [Cppcms-users] CppDB with MySQL UTF8

[augustin <aug...@ov...>]

On Sunday, September 11, 2011 08:37:10 PM 陈抒 wrote:
>                 string
> connection_string("mysql:host=192.168.1.15;database=d01;user=data;password
> =skst;set_charset_name=utf8"); cppdb::session session(connection_string);


Meanwhile, I documented this in the wiki.
The solution previously offered there was not accurate.

http://cppcms.com/wikipp/en/page/cppcms_1x_encoding_and_utf8 


augustin.

Re: [Cppcms-users] https request

[Artyom B. <art...@ya...>]

See it really depends on the workload. The asynchronous applications are mostly required for server-side push - i.e. push data from server to client when some event occurs. It looks like it isn't the case. So simplest is just to work with synchronous access and use thread pool - the ordinary approach.
To answer this question in more accurate way - describe what exactly you try to do.
About Linicom. Most of requests (that are highest load) are served from the data stored in memory + cache - i.e. some of postgresql datais "mirrored" to in memory data structures for efficient use. Some served from DB. It really depends on frequency of access to specific features.  It really depends on what and how you do.
 Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
 
      From: Василий Теркин <par...@gm...>
 To: cpp...@li... 
 Sent: Wednesday, February 4, 2015 3:54 PM
 Subject: [Cppcms-users] https request
   
Hello everybody.I want to implement OAuth2 in my first pet web project (i have very superficial knowledge of network/multithreded/event-driven programming).Could you please describe me the best approach to handle a huge amount of requests to perform https requests?Should i use synchronous application (sync curl? or i mised something inside cppcms..) and rely on cppcms::applications_pool, which will take care of everything (?), or make asynchronous application and dig into some kind of libcurl-multi (and invent wheel with requests pool, communicating with cppcms, may be dealing with several event loops or anything else).2Artyom:
Artyom, may you describe the Linicom project's internals (talking about cppcms)? In my case most of user requsts will retrieve data from postgresql server. I would appreciate for any advice.And thanks for the project!
Andrey L.

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Re: [Cppcms-users] Vim plugin

[Artyom B. <art...@ya...>]

I just use vim with HTML syntax... works fine - if someone develops share it :-) Artyom Beilis
--------------
CppCMS - C++ Web Framework:   http://cppcms.com/
CppDB - C++ SQL Connectivity: http://cppcms.com/sql/cppdb/
 
      From: Дмитрий Востриков <ds...@gm...>
 To: cpp...@li... 
 Sent: Saturday, January 31, 2015 2:23 PM
 Subject: [Cppcms-users] Vim plugin
   
Hi all, just a question, is it exist appropriate vim plugin that support CppCMS template syntax with highlighting and some autocompletion?As i know (from some topic on stackoverflow), CppCMS itself written with vim. May be Artyom has it? Please...ThanxDmitriy Vostrikov
------------------------------------------------------------------------------
Dive into the World of Parallel Programming. The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net/
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[Cppcms-users] https request

[Василий Т. <par...@gm...>]

Hello everybody.
I want to implement OAuth2 in my first pet web project (i have very superficial
knowledge of network/multithreded/event-driven programming).
Could you please describe me the best approach to handle a huge amount of
requests to perform https requests?
Should i use synchronous application (sync curl? or i mised something
inside cppcms..) and rely on cppcms::applications_pool, which will take
care of everything (?), or make asynchronous application and dig into some
kind of libcurl-multi (and invent wheel with requests pool, communicating
with cppcms, may be dealing with several event loops or anything else).
2Artyom:
Artyom, may you describe the Linicom <http://linicom.co.il/> project's
internals (talking about cppcms)? In my case most of user requsts will
retrieve data from postgresql server. I would appreciate for any advice.
And thanks for the project!

Andrey L.