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@baybatu
baybatu / java-ontanimli-kuralla-siralama.md
Created Dec 9, 2019
Java'da öntanımlı bir listeye göre sıralama yapmak
View java-ontanimli-kuralla-siralama.md
List<String> kurallar = Arrays.asList("ahmet", "veli", "mehmet");
List<String> sonuc = Arrays.asList("veli", "mehmet", "ahmet").stream()
  .sorted(Comparator.comparing(isim -> kurallar.indexOf(isim)))
  .collect(Collectors.toList());
assertThat(sonuc).isEqualTo(Arrays.asList("ahmet", "veli", "mehmet"));

Kaynak: https://stackoverflow.com/a/5245214

@baybatu
baybatu / twitterserver-admin-port.md
Last active Aug 29, 2019
Specifying admin port on TwitterServer
View twitterserver-admin-port.md

Pass following as program an argument

java -jar app.jar -admin.port=:9999
@baybatu
baybatu / run-kibana.sh
Last active Jun 12, 2019
Run Kibana for parameterized Elasticsearch. Kudos @mesut
View run-kibana.sh
#!/bin/bash
# USAGE: run-kibana.sh http://localhost:9200
echo "Running kibana for es host:$1"
docker run --name kibana -d -p 5601:5601 \
-e ELASTICSEARCH_HOSTS=$1 \
-e XPACK_GRAPH_ENABLED=false \
-e XPACK_ML_ENABLED=false \
@baybatu
baybatu / create-rabbitmq-exchange-queue-using-rest-api.sh
Created Apr 2, 2019
Create RabbitMQ queue and exchange with binding using REST API
View create-rabbitmq-exchange-queue-using-rest-api.sh
# create exchange
curl -i -u guest:guest -H "content-type:application/json" \
-XPUT -d'{"type":"fanout","durable":true}' \
http://localhost:15672/api/exchanges/%2f/my.exchange.name
# create queue
curl -i -u guest:guest -H "content-type:application/json" \
-XPUT -d'{"durable":true,"arguments":{"x-dead-letter-exchange":"", "x-dead-letter-routing-key": "my.queue.dead-letter"}}' \
http://localhost:15672/api/queues/%2f/my.queue
@baybatu
baybatu / SpringCouchbaseIdGeneration.java
Created Mar 23, 2019
spring-data-couchbase ile otomatik document ID üretimi
View SpringCouchbaseIdGeneration.java
@Document
public class OrnekDokuman {
@Id
@GeneratedValue(strategy = GenerationStrategy.UNIQUE) // UUID
String id;
}
@baybatu
baybatu / liquibase-changelog.sh
Created Feb 4, 2019
Generate Liquibase changelog SQLs on CLI
View liquibase-changelog.sh
java -jar liquibase.jar \
--driver=org.postgresql.Driver \
--classpath=postgresql-9.4.1208.jre6.jar \
--changeLogFile=/workspace/product-api/src/main/resources/db/changelog.xml \
--url="jdbc:postgresql://localhost:5432/product" \
--username=root \
--password=123qwe \
updateSQL
@baybatu
baybatu / ReIndexJenkinsfile
Last active Feb 4, 2019
ReIndex Elasticsearch index from one to another on Jenkinsfile. Example transfer happens from `products_v1` to `products_v2` index
View ReIndexJenkinsfile
#!/usr/bin/env groovy
node {
stage('checkout') {
checkout scm
}
stage("Reindex") {
String esHost = params.esHost //example: localhost:9200
String oldIndexVersion = params.oldIndexVersion //example: v1
String newIndexVersion = params.newIndexVersion //example: v2
@baybatu
baybatu / SwitchAliasJenkinsfile
Last active Feb 4, 2019
Switch `products` Elasticsearch alias between index versions on Jenkinsfile. Switching happens from `products_v1` to `products_v2`
View SwitchAliasJenkinsfile
#!/usr/bin/env groovy
node {
stage('checkout') {
checkout scm
}
stage("Switch alias between index versions") {
String esHost = params.esHost //example: localhost:9200
String oldIndexVersion = params.oldIndexVersion //example: v1
String newIndexVersion = params.newIndexVersion //example: v2
@baybatu
baybatu / analytic-functions.md
Last active Feb 3, 2019
SQL'de ROW_NUMBER, RANK ve DENSE_RANK farklarını anlatan güzel bir örnek
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