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Venkat Raman Venkat2811

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@avidLearnerInProgress
avidLearnerInProgress / dsa-youtubers-books-blogs.md
Last active August 11, 2025 09:26
Yet another list of awesome DSA resources
@mwakaba2
mwakaba2 / system_design_numbers_cheat_sheet.md
Last active November 22, 2025 17:03
Updated easy to remember system design numbers for back-of-the-envelope calculations

Updated, easy to remember numbers for back-of-the-envelope calculations in system design interviews

Powers of two table

Power    Approx Value (Bytes)       Bytes
-----------------------------------------
10                 1 thousand        1 KB
16                65 thousand       64 KB
20                  1 million        1 MB
30 1 billion 1 GB
@rushilgupta
rushilgupta / GoConcurrency.md
Last active December 11, 2025 13:17
Concurrency in golang and a mini Load-balancer

INTRO

Concurrency is a domain I have wanted to explore for a long time because the locks and the race conditions have always intimidated me. I recall somebody suggesting concurrency patterns in golang because they said "you share the data and not the variables".

Amused by that, I searched for "concurrency in golang" and bumped into this awesome slide by Rob Pike: https://talks.golang.org/2012/waza.slide#1 which does a great job of explaining channels, concurrency patterns and a mini-architecture of load-balancer (also explains the above one-liner).

Let's dig in:

Goroutines

@Venkat2811
Venkat2811 / kill_all_processes_by_name.sh
Created December 28, 2016 06:56
Shell script to grep and kill all process by name. Usage `sudo ./kill_all_processes_by_name.sh process_name`
#!/bin/bash
i="1"
echo "Running Script to kill all $1 processes"
while [[ $i -lt 100 ]]; do
PID=`ps -ef | grep $1 | grep -v 'grep' | awk '{print $2}'`
if [[ "" != "$PID" ]]; then
echo "killing $PID"
kill -9 $PID
@subfuzion
subfuzion / curl.md
Last active December 5, 2025 19:15
curl POST examples

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

@myusuf3
myusuf3 / delete_git_submodule.md
Created November 3, 2014 17:36
How effectively delete a git submodule.

To remove a submodule you need to:

  • Delete the relevant section from the .gitmodules file.
  • Stage the .gitmodules changes git add .gitmodules
  • Delete the relevant section from .git/config.
  • Run git rm --cached path_to_submodule (no trailing slash).
  • Run rm -rf .git/modules/path_to_submodule (no trailing slash).
  • Commit git commit -m "Removed submodule "
  • Delete the now untracked submodule files rm -rf path_to_submodule
@jboner
jboner / latency.txt
Last active December 11, 2025 11:10
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD