Build Kafka Cluster with SASL(Kerberos)
This is a for-beginner tutorial for those who already understand how Kafka works and the basic fu...
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Stream Processing - Simple Get-Start with Kafka and Spark
This post is for those who already understand the concept of stream processing and basic function...
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Parallelism with Collections in Popular Languages
Motivation No matter what programming language you're using, sometimes you get itch to map a whol...
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Effective Spray - Best way to arrange your routes
Spray is an elegant Framework in many ways. Here is my opinion on how to arrange your controllers...
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Locust - 負荷試験
Locust - 負荷試験 REF [1] - Locust document はじめで日本語で書きます。よろしくお願いします！ 負荷試験の難しさ 一つのThreadで、Requestを送信する...
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Play Framework - Connect to Remote Akka Actor
Play Framework - Connect to Remote Akka Actor REF: [1] - play - Integrating with Akka [2] - akka ...
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Scala Starter 101 - Convert between Mutable and Immutable
Generally, from mutable to immutable, you use the to* series methods in mutable collections, like...
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Ebean - Solve OptimisticLockException when update item using Ebean
Ref: 1 - Ebean and the OptimisticLockException 2 - http://www.avaje.org/occ.html The problem Rece...
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Scala - Use Multiple Configs in Sbt Project
Ref: [1] - play test 実行時に指定したconfファイルを読み込む [2] - github - typesafehub/config Using config file ab...
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Python - Most elegant way to read lines of file into list
Ref: [1] - Python: read file line by line into array For most cases, to read lines of file to a l...
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Akka - Logging to multiple files
Ref: [1] - Defining 1 logback file per level [2] - logback - manual [3] - Akka - Log into files I...
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Python - Quick start of logging
Ref: [1] - Good logging practice in Python A very simple file logger: import logging logger = log...
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Python - Install MySQLDB on EC2
Ref: [1] - Problem with installing ‘MySQLdb’ in Python [2] - Stackoverflow - How to install MySQL...
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Python - Simple multi-thread sample
Ref: [1] - Stackoverflow - Multiple Threads in Python This pattern is usually used in Http reques...
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Python - How do you split a list into evenly sized chunks in Python?
Ref: [1] How do you split a list into evenly sized chunks in Python? I found this very useful sni...
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Python - Check type of values
Ref: [1] - Stackoverflow - What's the canonical way to check for type in python? Exact type if ty...
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Python - Find out number of groups in the regex expression
Ref: [1] Stackoverflow - Find out number of capture groups in Python regular expressions import r...
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Akka - Log into files
Ref: [1]: Stackoverflow - How to redirect logging in akka? [2]: How to setup SLF4J and LOGBack in...
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Ebean - Lazy load to check resource existence
Ref: [1]: Stack Overflow - Ebean lazy load to see if resource exists When you delete, check count...
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Java - time ticks in NoSQL table as a range key
One year ago, I was working on a content web site, using Azure Table. To take advantage of NoSql ...
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