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Cristian Dugacicu razorcd

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razorcd /
Created Oct 5, 2018 — forked from yetanotherchris/
RabbitMQ on Docker with admin UI
# AWS specific install of Docker
sudo yum update -y
sudo yum install -y docker
sudo service docker start
sudo usermod -a -G docker ec2-user
# exit the SSH session, login again
# Docker
docker run -d --hostname my-rabbit --name some-rabbit -p 4369:4369 -p 5671:5671 -p 5672:5672 -p 15672:15672 rabbitmq
razorcd /
Created Aug 20, 2018
Flux: custom emitter simulation
* Custom emitter.
@GetMapping(value = "/custom-emitter", produces = MediaType.TEXT_EVENT_STREAM_VALUE)
public Flux<String> getCustomEmitter() {
EmitterProcessor<String> hotSource = EmitterProcessor.create();
Flux<String> hotFlux = hotSource.publish().autoConnect();
razorcd /
Last active Aug 2, 2018
Elasticsearch - CRUD document sync


POST localhost:9200/index/type?refresh

  "ssoId": "s0000000001",
  "externalSsoType": "U",
  "socketNumber": "s0000000001",
  "deviceNote": null,
  "isTaken": null,
View copy_columns_to_new_table.sql
-- MIGRATION1: (copy data)
-- create new table
CREATE TABLE cdm.adresses (
enrichment_erp_id BIGINT(20) UNIQUE NOT NULL,
latitude DECIMAL(20,6) NOT NULL,
longitude DECIMAL(20,6) NOT NULL,
zip_code VARCHAR(20) NOT NULL,
street VARCHAR(255),
razorcd / gist:f44320c64347bd09943d625322485b6b
Created Jun 16, 2018 — forked from psayre23/gist:c30a821239f4818b0709
Runtime Complexity of Java Collections
View gist:f44320c64347bd09943d625322485b6b
Below are the Big O performance of common functions of different Java Collections.
List | Add | Remove | Get | Contains | Next | Data Structure
ArrayList | O(1) | O(n) | O(1) | O(n) | O(1) | Array
LinkedList | O(1) | O(1) | O(n) | O(n) | O(1) | Linked List
CopyOnWriteArrayList | O(n) | O(n) | O(1) | O(n) | O(1) | Array
razorcd / create_user.commands
Last active Jun 20, 2018
create user in mongo db
View create_user.commands
//login as admin using the db where the admin user is defined
mongo --port 27017 -u "admin" -p "admin" --authenticationDatabase "admin"
// or the default:
mongo --port 27017 -u "root" -p "password" --authenticationDatabase "root"
//list all system users:
View parse.js
var fs = require('fs');
var content = readFile("19_3_2018log.txt");
var allLines = getLines(content);
console.log("All lines:");
var result = => parseLineToObject(line));
razorcd /
Last active Jan 14, 2018
Git Subtree merging while keeping the commits
# add remote repo from another filepath:
git remote add -f springBootSippetsFullRepo ../1/spring-boot-snippets-full-folder
# merge to current master (will not messup original files)
git merge -s ours springBootSippetsFullRepo/master
# move new repo in a subfolder:
git read-tree --prefix=springBootSnippets -u springBootSippetsFull/master
# comit new folder:
razorcd / ES_contracts_for_interval.txt
Last active May 17, 2017
Contracts based on a range intersection where validTo can be null
View ES_contracts_for_interval.txt
"size": 9999999,
"query": {
"bool": {
"must": [
"nested": {
"path": "contractAttributions",
"query": {
"bool": {
View gist:31c9ccddc78dd2a2f30f9135cd1002b6
POST http://localhost:9200/devices/_search
"query": {
"bool": {
"must": [
"nested": {
"path": "contractAttributions",
"query": {
"bool": {
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