SrinivasDhulipalla / benchmark-commands.txt

Created February 17, 2020 10:21 — forked from jkreps/benchmark-commands.txt

Kafka Benchmark Commands

	Producer

	Setup
	bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test-rep-one --partitions 6 --replication-factor 1
	bin/kafka-topics.sh --zookeeper esv4-hcl197.grid.linkedin.com:2181 --create --topic test --partitions 6 --replication-factor 3

	Single thread, no replication

	bin/kafka-run-class.sh org.apache.kafka.clients.tools.ProducerPerformance test7 50000000 100 -1 acks=1 bootstrap.servers=esv4-hcl198.grid.linkedin.com:9092 buffer.memory=67108864 batch.size=8196

SrinivasDhulipalla / System Design.md

Created November 1, 2018 11:22 — forked from vasanthk/System Design.md

System Design Cheatsheet

Picking the right architecture = Picking the right battles + Managing trade-offs

Basic Steps

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

SrinivasDhulipalla / intensivedata.txt

Created November 1, 2018 11:00 — forked from SerCeMan/intensivedata.txt

Designing Data-Intensive Applications: The Big Ideas Behind Reliable, Scalable, and Maintainable Systems

	# Designing Data-Intensive Applications: The Big Ideas Behind Reliable, Scalable, and Maintainable Systems

	1. Chapter 1. Reliable, Scalable and Maintainable Applications
	1. R faults != failures, faults cause failures. Systems should be fault-tolerant, resistant to some types of faults
	2. S Amazon cares about 99.9% percentile because people with higher latencies usually are people who have the most data and therefore, they’re most valuable customers
	3. S tail latency amplification - multiple requests one critical path during one page served
	2. Chapter 2. Data Models and Query Languages
	1. Hierarchical model - imperative querying, no way to change schema, children are ordered, no many-to-many
	2. CODASYL (network) vs SQL
	3. NoSQL - often no schema (precisely - schema on read vs schema on write)

SrinivasDhulipalla / BatchCollectionLoader.java

Created August 11, 2018 14:08 — forked from mirasrael/BatchCollectionLoader.java

	package cv.hibernate;

	import org.hibernate.FetchMode;
	import org.hibernate.HibernateException;
	import org.hibernate.MappingException;
	import org.hibernate.QueryException;
	import org.hibernate.cache.spi.access.CollectionRegionAccessStrategy;
	import org.hibernate.cache.spi.entry.CacheEntryStructure;
	import org.hibernate.collection.spi.PersistentCollection;
	import org.hibernate.engine.spi.LoadQueryInfluencers;

SrinivasDhulipalla / InfixToPostfix.cpp

Last active August 29, 2015 14:08 — forked from mycodeschool/InfixToPostfix.cpp

	/*
	Infix to postfix conversion in C++
	Input Postfix expression must be in a desired format.
	Operands and operator, both must be single character.
	Only '+' , '-' , '*', '/' and '$' (for exponentiation) operators are expected.
	*/
	#include<iostream>
	#include<stack>
	#include<string>

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