Using a Pool
Most code will want to connect to Redis using a pool of shared connection objects. Connecting to Redis using a pool involves two different code block. At initialization time, your application needs to create the connection pool:
JedisPoolConfig poolCfg = new JedisPoolConfig();
...
Once you have established a connection to Redis you can get and set values using the Jedis connection object:
Get
String value = jedis.get(myKey);
Set
jedis.put(myKey, "some value");
CentOS versions 2 - 5
CentOS version 7
CentOS 7 is fully based on RedHat the detail documentation, examples and system administration guides are located here:CentOS 7 full documention
Local mode
In local mode, for example when running your application from an IDE, you can configure log4j as usual, i.e. by making a log4j.properties available in the classpath. An easy way in maven is to create log4j.properties in the src/main/resources folder. Here is an example:
log4j.rootLogger...
In case you need different settings for your various applications, there is (as of Flink 1.2) no easy way to do that.
If you use the one-yarn-cluster-per-job mode of flink (i.e. you launch your scripts with: flink run -m yarn-cluster ...), here is a workaround :
create a conf directory somewhe...
Yarn does not by default aggregate logs before an application finishes, which can be problematic with streaming jobs that don't even terminate.
A workaround is to use rsyslog, which is available on most linux machines.
First, allow incoming udp requests by uncommenting the following lines in /etc/...
Get-User()
Use Verb-Noun pattern while naming a function.
Verb implies an action e.g. Get, Set, New, Read, Write and many more. See approved verbs.
Noun should be singular even if it acts on multiple items. Get-User() may return one or multiple users.
Use Pascal case for both Verb and Noun. ...
There are a variety of ways to validate parameter entry, in PowerShell.
Instead of writing code within functions or scripts to validate parameter values, these ParameterAttributes will throw if invalid values are passed.
ValidateSet
Sometimes we need to restrict the possible values that a paramet...
To add a component with a selector [prefix]-user-list, run:
$ ng g c user-list
installing component
create src/app/user-list/user-list.component.css
create src/app/user-list/user-list.component.html
create src/app/user-list/user-list.component.spec.ts
create src/app/use...
To split pane vertically, do a prefix followed by %
ie, by default ctrlb followed by %
To split pane horizontally, do a prefix followed by "
ie, by default ctrlb followed by "
To add a directive with a selector [prefix]Highlight, run:
$ ng g d highlight
installing directive
create src/app/highlight.directive.spec.ts
create src/app/highlight.directive.ts
update src/app/app.module.ts
To prevent prefix usage add --prefix false or -p false flag
...
To add a service with a name UserService, run:
$ ng g s user
installing service
create src/app/user.service.spec.ts
create src/app/user.service.ts
To prevent .spec files creation add --spec false or -sp false flag
$ ng g s user --spec false
installing service
...
To add a pipe with a name searchByName, run:
$ ng g p search-by-name
installing pipe
create src/app/search-by-name.pipe.spec.ts
create src/app/search-by-name.pipe.ts
update src/app/app.module.ts
To prevent .spec files creation add --spec false or -sp false flag
$ ng ...
To add a module called GuestModule, run:
$ ng g m guest
installing module
create src/app/guest/guest.module.ts
To enable .spec files creation add --spec or -sp flag
$ ng g m guest --spec
installing module
create src/app/guest/guest.module.spec.ts
create src/app/...
If your Internet connection is provided via a proxy Maven will not be able to download jars from remote repositories - a common problem faced by companies.
To solve this, Maven needs to be provided the details and credentials of the proxy by going to {Maven install location} → conf → settings.xml. ...
