Vic vicly

Custom Factory

import org.glassfish.hk2.api.Factory;
import org.glassfish.hk2.utilities.binding.AbstractBinder;
import org.glassfish.jersey.process.internal.RequestScoped;

import javax.inject.Inject;
import javax.ws.rs.container.ContainerRequestContext;

Check out the CloudWatch Metrics and Dimensions

Custom Metrics

By default Amazon Linux get CLI installed

# Send custom metrics to CloudWatch (without dimensions)
aws cloudwatch put-metric-data --metric-nname MyFreeMemGB --namespace MyLinux --value 5 --region eu-west-1

sudo apt-get install stress

# run 8 processes, to get CPU load high
sudo stress --cpu 8

In api/build.gradle

apply plugin: "maven"

group = "foo"
version = "1.0"

URL with ? are not cached in many cases
URL with matrix params are cached
Metrix param can appear everywhere in the path and are not limited to its end
Metrix param can have more than one value, e.g. paramA=val1,val2
Metrix param is used when it's hard to structure a hierarchy in URL

Example

PATH: partical update

Create Annotation

@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@HttpMethod("PATCH")

What every web developer must know about URL encoding

http://blog.lunatech.com/2009/02/03/what-every-web-developer-must-know-about-url-encoding

General URL syntax

https://bob:[email protected]:8080/file;p=1?q=2#third

Part	Data

TAI - International Atomic Time (Temps Atomique International = TAI)

部署在50多个国家的200多个原子时钟的平均值 TAI-UT1大约是1958年1月1日

UT - Universal Time 世界时

Defined by the Earth's rotation (GPS satellites used) UT0完全按照天体运行计算出来的时间 UT1在UT0上做了调整

	{
	"Version": "2012-10-17",
	"Statement": [
	{
	"Sid": "AllowUserToSeeBucketListInTheConsole",
	"Action": [
	"s3:ListAllMyBuckets",
	"s3:GetBucketLocation"
	],
	"Effect": "Allow",