Coding Best Practices For Memory Management
- 1. Problems…….. • Application Crashed • Application Hanged • Intermittent Issue • Services are stopped • Bad Application Performance • Time Out Issues • While running one program another program is crashed
- 2. Why This Happens Memory Leak “A memory leak is the gradual loss of available computer memory when a program (an application or part of the operating system) repeatedly fails to return memory that it has obtained for temporary use. As a result, the available memory for that application or that part of the operating system becomes exhausted and the program can no longer function. For a program that is frequently opened or called or that runs continuously, even a very small memory leak can eventually cause the program or the system to terminate.”
- 3. • Make the program smaller • Get(Allocate) more memory Which One? MEMORY MANAGEMENT
- 4. What Is Memory Management• “memory management is to provide ways to dynamically allocate portions of memory to programs at their request, and free it for reuse when no longer needed. ”
- 5. How To Avoid Memory Leaks • Monitor the resource consumption of your application over time • Handle Memory Management at application side
- 6. Best Practices : C#Create only the objects as and when needed and dispose it after use. Decide the scope for each variable and object, if they are required inside methods declare them inside those methods, do not make them private Use the IDisposable interfaces on your custom objects and release all the resources(if any), un-register from all the events etc Use ‘using’ if you are working with MemoryStream Use least static variables or instances, if required then too think twice whether those objects are required in entire lifetime of program Do not use GC.Collect() manually,(it is bad practice)
- 7. Best Practices : C#
- 8. Best Practices : Javascript • “Based on Garbage Collection as in C#” • Always keep browser extension update • Use Array Filter • Use static buffers wherever possible. The compiler automatically frees such memory. • Previously allocated memory should be manually freed, after it is no longer required. • Use ~~ instead of math functions • For emptying and array use length • Merge array using push instead of concat • Use splice to delete array element • Get default value using ||
- 9. Best Practices : Javascript
- 10. Best Practices : Python• “Not based on Garbage Collection but it handles memory management” Use Slots for your objects Interning: Beware of Interned Strings! Use Format Instead of ‘+’ for Generating Strings Use Modules Use built-in functions wherever possible: Use Multiprocessing not multithreading Design and Data Structure Pick right version
- 11. Best Practices : Python
- 12. Best Practices : C++“You need to write code about memory management “ Reuse memory ; Try to avoid allocate/deallocate Use macros instead of small functions Use int,float instead of char Try to avoid global variables Use smart pointers Use static buffers whenever possible because compiler frees up such kind of memory automatically
- 13. Best Practices : C++
- 14. Before writing code Always Ask… • Is there anything I could be doing more efficiently in my code? • What (common) optimizations do language engines make? • What is the language engine unable to optimize for • Is there anyway I can minify my code?