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PG::ConnectionBad - could not connect to server: Connection refused
...ad -w homebrew.mxcl.postgresql.plist
OR on newer versions of Brew
brew services restart postgresql
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OSGi, Java Modularity and Jigsaw
... correct package, replacing direct instantiation with the use of decoupled services, and so on.
This makes it hard to apply OSGi directly to the JRE codebase, yet we still have a requirement to split the JRE into separate pieces or "modules" so that cut-down versions of the JRE can be delivered.
I...
How do you increase the max number of concurrent connections in Apache?
...hreads determined by ThreadsPerChild parameter so this means 2 process can service only 50 concurrent connections/clients i.e. 25x2=50. Now if more concurrent users comes, then another child process will start, that can service another 25 users. But how many child processes can be started is control...
Is it possible to make a Tree View with Angular?
...nd out about this in this thread, and abstracted this functionality into a service.
module.factory('RecursionHelper', ['$compile', function($compile){
return {
/**
* Manually compiles the element, fixing the recursion loop.
* @param element
* @param [link] A ...
REST authentication and exposing the API key
...cret
key. So a public javascript client that connects directly to another
service is not possible because you need a server middleman to
protect the secret.
Server signs request using some algorithm that includes the secret
key (the secret key is sort of like a salt) and preferably a timestamp then...
Start ssh-agent on login
...y great (should work on all systemd-based distros):
Create a systemd user service, by putting the following to ~/.config/systemd/user/ssh-agent.service:
[Unit]
Description=SSH key agent
[Service]
Type=simple
Environment=SSH_AUTH_SOCK=%t/ssh-agent.socket
ExecStart=/usr/bin/ssh-agent -D -a $SSH_AUT...
How to read multiple text files into a single RDD?
...ollection.JavaConverters._
import java.util.ArrayList
import com.amazonaws.services.s3.AmazonS3Client
import com.amazonaws.services.s3.model.ObjectListing
import com.amazonaws.services.s3.model.S3ObjectSummary
import com.amazonaws.services.s3.model.ListObjectsRequest
def listFiles(s3_bucket:String,...
When annotating a class with @Component, does this mean it is a Spring Bean and Singleton?
... @Component is a Spring bean and a Singleton.
If the class belongs to the service layer you may want to annotate it with @Service instead
But have in mind that in order for these annotations to be detected, you need to place this line in applicationContext.xml:
<context:component-scan base-pac...
How to get complete address from latitude and longitude?
...ddress from Lat-Long (Geo-coordinates). You can simply hit google-maps web service passing the Latitude and longitude. It is simply a GET-Method web-service.
It will return the JSON Response that can be parsed easily to get address. The URL for this is:
http://maps.googleapis.com/maps/api/geocode/...
Is there a pattern for initializing objects created via a DI container
... of the MyIntf implementation requires more than runTimeParam (read: other services that one would want resolved by an IoC), then you're still faced with resolving those dependencies in your factory. I like the @PhilSandler answer of passing those dependencies into the factory's constructor to solve...