# Software Performance Begins with Time Complexity and Memory

DevFeed: [Software Performance Begins with Time Complexity and Memory](<https://devfeed.tech/articles/software-performance-begins-with-time-complexity-and-memory-39767.md>)

Original publisher: [Read original article](<https://furkankolcu.com/post/software-performance-begins-with-time-complexity-and-memory>)

Author: Furkan Kolcu

Published: 2025-09-10T17:39:37Z

Content type: tutorial

Language: en

Sources: [Furkan Kolcu - Software Engineer Blog](<https://devfeed.tech/sources/furkan-kolcu-software-engineer-blog.md>)

Topics: [Software](<https://devfeed.tech/topics/software.md>), [Algorithms, Complexity](<https://devfeed.tech/topics/algorithms-complexity.md>), [Scalability](<https://devfeed.tech/topics/scalability.md>), [Programming](<https://devfeed.tech/topics/programming.md>), [Data structures](<https://devfeed.tech/topics/data-structures.md>), [Go](<https://devfeed.tech/topics/go.md>), [C](<https://devfeed.tech/topics/c.md>)

Tags: [big-o-notation](<https://devfeed.tech/tags/big-o-notation.md>), [binary-search](<https://devfeed.tech/tags/binary-search.md>), [c](<https://devfeed.tech/tags/c.md>), [complexity](<https://devfeed.tech/tags/complexity.md>), [go](<https://devfeed.tech/tags/go.md>), [memory](<https://devfeed.tech/tags/memory.md>), [performance](<https://devfeed.tech/tags/performance.md>), [scalability](<https://devfeed.tech/tags/scalability.md>), [software-engineering](<https://devfeed.tech/tags/software-engineering.md>), [sorting](<https://devfeed.tech/tags/sorting.md>), [space-complexity](<https://devfeed.tech/tags/space-complexity.md>), [technology](<https://devfeed.tech/tags/technology.md>), [time-complexity](<https://devfeed.tech/tags/time-complexity.md>)

## AI overview

This tutorial explains how time complexity and memory usage affect application performance as input size, system scale, and traffic increase. It introduces Big O notation, compares common complexity classes, and discusses trade-offs involving algorithms, data structures, and memory, with examples in Go and C.

## Source excerpt

Memory usage and time complexity shape the performance of every application. This post explains why they matter, how they affect scalability, and how to think about the trade-offs behind every decision.