Confoo Canada 2019 conference

Confoo montreal is one of the well run, well-attended conference in Canada. This is one of the conferences where they serve 3-course hot lunch meals in a proper dining table with proper silverware :-). Great speakers all around the world, enthusiastic attendees, pleasant ambience (hotel Bonaventure), meticulous organization, beautiful Montreal city – all essential characteristics to make up an excellent conference.

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ECLIPSE MAT – INCOMING REFERENCES, OUTGOING REFERENCES

Eclipse Memory Analyzer (MAT) is a powerful tool for heap dump analysis. It has several great features to debug memory problems effectively. ‘Incoming references’ and ‘outgoing references’ is one such feature. In this article let’s discuss about ‘incoming references’, ‘outgoing references’ and difference between them.

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VIRTUAL MACHINE ERROR

Java.lang.VirtualMachineError is thrown when Java virtual machine encounters any internal error or resource limitation which prevents it from functioning. It’s a self-defensive mechanism employed by JVM to prevent entire application from crashing. In this article lets discuss different types of VirtualMachineError, their characteristics, reasons why they get triggered and potentials solutions to fix them.

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HOW TO INVOKE HEAP DUMP ANALYSIS API THROUGH POSTMAN

HeapHero provides powerful REST API to analyze Java/android heap dumps. This API can be used in CI/CD pipeline to proactively analyze how much memory is wasted due to inefficient programming practices such duplication of strings, over allocation and under utilization of data structures, sub-optimal data type definitions,…. It can be used in production environment too detect memory leaks proactively. This document walks through the steps involved in invoking this REST API through the Postman tool.

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HOW MUCH MEMORY IS MY APPLICATION WASTING?

In early 1970s 1 MB was costing 1 million $. Now 1 mb is costing fraction of that cost. There is no comparison. This is one of the reasons why engineers and enterprises don’t worry about memory any more. 1 million $ in 1970s might be equivalent of several millions of dollars’ worth today. Thus, back in the day’s memory was treated so preciously. This preciousness has been vividly described in the book ‘Idea Man’ – autobiography of Paul Allen (Microsoft Co-founder). Paul Allen talks about the challenge he and Bill Gates faced in writing BASIC programming language (Microsoft’s very first product) under 4 KB.

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