The multiprocess from nginx is quite different with some old server
implementations. Within nginx one process can  handle thousands of
connections at the same time. But some old server implementations are one
process per request.

If your http service is stateless, multiprocess or single process is not
important. If your http service should rely on some state store such as
session store, with nginx-clojure you have three choices :


   1. Encrypted Cookie store
   2. SharedHashMap
   <https://github.com/OpenHFT/HugeCollections/wiki/Getting-Started> to
   share data among nginx worker processes
   3. Remote Session Store such as Redis, MemCached etc.




On Mon, Jun 2, 2014 at 5:22 PM, Toni Helenius <ton...@gmail.com> wrote:

> Out of interest, how do people use these multiprocess server thingies like
> nginx-clojure or vert.x with datomic?
>
>
> On Saturday, May 31, 2014 7:57:54 PM UTC+3, Xfeep Zhang wrote:
>>
>> Nginx-Clojure is a Nginx <http://nginx.org/> module for embedding
>> Clojure or Java programs, typically those Ring
>> <https://github.com/ring-clojure/ring/blob/master/SPEC> based handlers.
>>
>> Release 0.2.2 contains two updates
>>
>> 1. Fix bug of with Compojure 1.1.5 + Apache Solrj 4.3.0 + httpclient
>> 4.3.2 NPE happens first time then everything is OK (issue #22)
>> 2. Verifying option for auto generated waving configurations needed by
>> coroutine based socket (issue #23)
>>
>>
>> The binary release can be found from https://sourceforge.net/
>> projects/nginx-clojure/files/
>> The source files and guide can be found from https://github.com/nginx-
>> clojure/nginx-clojure/blob/master/README.md
>> The index page for guide can be found from https://github.com/nginx-
>> clojure/nginx-clojure/wiki
>>
>> There are some core features of Nginx-Clojure:
>>
>>    1. Compatible with Ring
>>    <https://github.com/ring-clojure/ring/blob/master/SPEC> and obviously
>>    supports those Ring based frameworks, such as Compojure etc.
>>    2. Use Java/Clojure code to write a simple nginx rewrite handler to
>>    set var before proxy pass
>>    3. Non-blocking coroutine based socket which is Compatible with Java
>>    Socket API and works well with largely existing java library such as 
>> apache
>>    http client, mysql jdbc drivers. With this feature one java main thread 
>> can
>>    handle thousands of connections.
>>    4. Handle multiple sockets parallel in sub coroutines, e.g. we can
>>    invoke two remote services at the same time feature
>>    5. Asynchronous callback API of socket for some advanced usage
>>    6. Run initialization clojure code when nginx worker starting
>>    7. Compatible with the Nginx lastest stable version 1.6.0. (Nginx
>>    1.4.x is also ok, older version is not tested and maybe works.)
>>    8. One of benifits of Nginx <http://nginx.org/> is worker processes
>>    are automatically restarted by a master process if they crash
>>    9. Utilizes lazy headers and direct memory operation between Nginx
>>    <http://nginx.org/> and JVM to fast handle dynamic contents from
>>    Clojure or Java code.
>>    10. Utilizes Nginx <http://nginx.org/> zero copy file sending
>>    mechanism to fast handle static contents controlled by Clojure or Java 
>> code.
>>    11. Supports Linux x64, Linux x86 32bit, Win32 and Mac OS X. Win64
>>    users can also run it with a 32bit JRE/JDK.
>>
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