| What is Docker? | |
| - Docker is used for containarization. | |
| - Docker runs the specific software or in this case an image without being installed in the system | |
| - Docker is like mini containers of os running softwares inspite of any Operating system | |
| - It helps to run multiple servers and softwares and many more.. | |
| What it Does? | |
| - It isolates(Namespace) the resources[Processes, HardDrive, Users, InterProcessComm, Network] available from the system |
| #! /bin/bash | |
| # ECHO COMMAND | |
| # echo Hello World! | |
| # VARIABLES | |
| # Uppercase by convention | |
| # Letters, numbers, underscores | |
| NAME="Bob" | |
| # echo "My name is $NAME" |
People
 :bowtie: |
😄 :smile: |
😆 :laughing: |
|---|---|---|
😊 :blush: |
😃 :smiley: |
:relaxed: |
😏 :smirk: |
😍 :heart_eyes: |
😘 :kissing_heart: |
😚 :kissing_closed_eyes: |
😳 :flushed: |
😌 :relieved: |
😆 :satisfied: |
😁 :grin: |
😉 :wink: |
😜 :stuck_out_tongue_winking_eye: |
😝 :stuck_out_tongue_closed_eyes: |
😀 :grinning: |
😗 :kissing: |
😙 :kissing_smiling_eyes: |
😛 :stuck_out_tongue: |
| Redis Commands:: | |
| - hmset key vals.. | |
| - hgetall key | |
| - lpush key val | |
| - lrange key 0 -1 | |
| - sadd key val | |
| - smembers key | |
| - sismember key val | |
| - zadd key score val |
There are two ways to handle these in web applications.
Using sessions method or jwt tokenized way to handle the auth and auth.
express-session express module with built in cookies based session management system and also integrate with stores to save the sessions.
| Threads: | |
| It consists of intructions to be ran on a process in the cpu..It is a part of thread | |
| An OS schedular tells which threads should be processed | |
| Process: | |
| An instance of a computer program | |
| A process can have multiple threads | |
| Cores(cpu): | |
| A Cpu can execute more than one thread a time, this is called multi-threading or hyper-threading |