Im working in a "home project solr"(aka PoC), using Solr as search engine.
I'm using master/slave configuration in two distinct servers, so(in my plans) my search would be avaiable even if the main server comes down but, the problem is:
Im currently doing my search at url
http://mainSOLRSERVER:8080/search/select/?q=*:*
Is there any built-in solr component to check if this url is OK, and if is not, change to another server
http://redundancySOLRSERVER:8080/search/select/?q=*:*?
I aint using Solrj in my application, its a simple ASP.Net application using xml parsing in Solr's results.
The only thing I came up with, would be send a ping request to Solr's main server and, if returns not ok, build the request with the redundancy URL, but that would be necessary in every single search request, is that the right approach?
Thanks in advance!
In production scenario, you would use a load balancer.
You don't need the ping. Directly execute the query on the main URL and if it returns an error, then query the backup URL. If that also throws error, then you are out of luck.
Related
I am trying to create a plugin which logs http requests from users into a database. So far I've logged the requests for php files by hooking my function to the init function. But now I want to know if I can also log requests for files such as images, documents, etc. Is there any php code executed when someone requests files? Thank you.
Not by default, no. The normal mod_rewrite rules (not to be confused with WP's own rewrite rules) Wordpress uses specifically exclude any existing files such as images, css or javascript files. Those will be handled directly by Apache.
You obviously could add a custom script that runs on each request, logs the access to the database, reads those files and prints their content to the client, but it would come at a considerable cost, I'm afraid.
Apache, albeit not the fastest webserver around, is much, much faster in delivering a file to a client than running a php script, setting up a database connection, logging etc pp would be.
You'd get much higher server load, and probably noticeably slower page loads.
Instead, I recommend that you parse the access logs. They'll most likely contain all of the data you're looking for, and if you have access to the configuration, you can add specific headers sent by the client. You can easily do this with a cronjob that runs once a day, and it doesn't even have to run on the same server.
As we know,nginx-rtmp provides stat function, but the result style is web page. I have several nginx server, I want to collect all the live streams info in these nginx server, and integrate them into my web system.So does nginx provide interface to get these info or is there any other idea to do it?
THANKS!
It also provides a stat.xml based on which the xsl builds the html. You can programatically parse the xml structure and build a list of the currently running streams on your server.
I'm using Solr 4.10.2 and Drupal 7.X, I have the Apache Solr Module Framework operating and sending the requests to Solr From Drupal. Currently when we perform a search, Drupal builds the query and sends it to Solr. Solr just executes the query and returns the results without using it's internal handlers which can be configured through SolrConfig.xml.
I would like to know if there is a way to just send the searched terms (without building a query) from Drupal and let Solr use the internal handlers declared in SolrConfig.xml to handle the request, build the query and then return the data?
The reason for this is we have been working on trying to boost some results when we perform a search (we want exact match first & fuzzy search results after) by changing the "weight" of some fields.
We know that from Back Office we can use the "Bias" function to boost some fields but this is too limited for what we are trying to achieve.
We also know we can change the query sent from Drupal directly from code side by using hook_apachesolr_modify_query() but we prefer changing as little code as possible and using the SolrConfig.xml /handlers which we already have configured to return the results as we want.
Ok, we figured out how to do this:
In order to choose the handler that is being used by Solr while sending a request from Drupal, we have to edit the "hook_apachesolr_query_alter" function and add the following code:
$query->addParam(‘qt’, ‘MyHandlerName’);
We did some extra coding to allow us to change the Handler directly from back office in order to be able to switch handlers without touching the code.
Hi
I've downloaded the Cairngorm3 Simple Sample Application from here.
There's a few steps.
a) Download the server-side zip. It contains a PDF instructing how to start a HSQLDB database and get a Tomcat instance up an running (I used catalina.sh start).
b) Check out the source with Subversion, and load it up into Flashbuilder 4. (You need Flex 3.4 SDK)
When I run the app (an Outlook like app written in Flex), I have issues at the point I try and save a contact. I'm assuming it's on a remoteobject call.
But it I get this:
Send failed
faultCode:Client.Error.MessageSend faultString:'Send failed' faultDetail:'Channel.Ping.Failed error Detected duplicate HTTP-based FlexSessions, generally due to the remote host disabling session cookies. Session cookies must be enabled to manage the client connection correctly. url: 'http://localhost:8400/messagebroker/amf;jsessionid=5765DDDB6E2D54BD03D3E636B0E8C03E'''
I'm wondering if this is something you need to tweak in services-config.xml?
Located in flex-frameworks/tomcat/webapps/ROOT/WEB-INF/flex folder (flex-frameworks comes from the server-side zip download:
Anyone got any ideas?
This is Christophe Coenraets baby.
I also subsequently found a blog post by Alexander Glosband, but couldn't ascertain from it, what you need to do as a work around. i.e. Is this something that is configurable?
The way to reproduce the error consistently is to try and activate the web camera from the app. Then instead of clicking accept, reload the screen. Then when you try and take a photo after subsequently granting access to camera, you get the duplicate session error.
I think there is an issue with the code pertaining to the Camera, that's not cleaning up after itself correctly, the session is probably not being tidied up correctly.
You are right, problem comes from services-config.xml. Change your url from
http://localhost:8400/messagebroker/amf
to
/messagebroker/amf
I found solution from here send failed error
"Compiler EMBEDS channels, endpoints and destinations into SWF" video tells.
Scenario:
localhost receives the current HttpRequest with 3 hidden inputs and a posted file. I must then forward this form data to an external image host and get the response.
See the System.Net.WebClient and related classes. You can use them to create a request to the remote server and handle the response. Also get Fiddler to help you replicate what the browser sends.
I hate doing this. It wastes my server's bandwidth and ties up IIS threads as well as using my server's CPU. It sucks and it's worth avoiding at all cost. Many services like, one that comes to mind is fliqz, provide a mechanism such that the files are uploaded directly from the client to their server (bypassing yours) and then they make a request to your server passing it various info on the query string.