mlconnor

Elastic Beanstalk Java JVM Settings

Determining the right memory settings (MX & MS) for the JVM is not trivial. If you set memory too low then your machine will trash as it runs out and eventually crash. If you set it too high then other critical processes such as Apache or the OS itself may become memory starved and also cause crashes.

In general, I think it best to set the initial memory setting (MS) to be small, around 200M. The real variable we need to calculate is the limit we will place on JVM memory (MS).

In order to make this determination, we need to calculate a few things such as the memory that Apache and the Linux OS need to operate efficiently.

Apache Memory Needs

denji

Moved to git repository: https://github.com/denji/golang-tls

Generate private key (.key)

# Key considerations for algorithm "RSA" ≥ 2048-bit
openssl genrsa -out server.key 2048

# Key considerations for algorithm "ECDSA" ≥ secp384r1
# List ECDSA the supported curves (openssl ecparam -list_curves)

maxvt

Currently, there is an explosion of tools that aim to manage secrets for automated, cloud native infrastructure management. Daniel Somerfield did some work classifying the various approaches, but (as far as I know) no one has made a recent effort to summarize the various tools.

This is an attempt to give a quick overview of what can be found out there. The list is alphabetical. There will be tools that are missing, and some of the facts might be wrong--I welcome your corrections. For the purpose, I can be reached via @maxvt on Twitter, or just leave me a comment here.

There is a companion feature matrix of various tools. Comments are welcome in the same manner.

premraj10

import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;

import net.sf.cglib.proxy.Enhancer;
import net.sf.cglib.proxy.MethodInterceptor;
import net.sf.cglib.proxy.MethodProxy;

public class CGLibProxySample {
	@SuppressWarnings("unchecked")

fntlnz

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

EronWright

Simple Maven Repository

Hosting a shared Maven repository on a remote server may be accomplished with a simple web server such as Apache HTTP server. This works because most of the resolution and publishing logic of Maven is implemented in the client. That said, it works only if you know the groupId and artifactId to be published, since appropriate directories must be created by hand.

Do consider using more sophisticated server software such as Artifactory or Sonatype Nexus. Below is the 'bare minimum' alternative.

Caution: this example exposes a writable directory without any authentication, and thus assumes a trusted network.

ryan-lane

default:
  url: https://confidant.example.com
  auth_key: alias/confidant-production
  auth_context:
    # from context will be auto-set
    to: confidant-production
    user_type: user
  token_cache_file: '/Users/myhomedir/.confidant_token'
  region: us-east-1

Schachte

import java.util.*;

class LongestSubstringKDistinct {
  public static int findLength(String str, int k) {
    int windowStart = 0, maxLength = 0;
    Map<Character, Integer> charFrequencyMap = new HashMap<>();
    for (int windowEnd = 0; windowEnd < str.length(); windowEnd++) {
      char rightChar = str.charAt(windowEnd);
      charFrequencyMap.put(rightChar, charFrequencyMap.getOrDefault(rightChar, 0) + 1);

ogazitt

package auth

import (
	"encoding/json"
	"fmt"
	"io"
	"io/ioutil"
	"net"
	"net/http"
	"net/url"