Rest-API

Response (GET Method) -->

1. Header --> Code , Status , Massage
2. Body --> JSON , DATA insert Massage
3. Cookies --> Cookie Encryption/Decryption and others policies...

Request (POST Method) -->

1. JSON Array/Object pattern
2. Type of image/audio/video

API SECURITY -->

1. Key Verification .
2. User Agent Verification .
3. CSRF Protection.
4. Rate Limiting.
5. Data Sanitization.
6. Authentication/Authorization.
7. HTTP Secure Header.

Form mongodb -->

we know mongodb always create objectId --> for example : _id: ObjectId(7df78ad8902c) 7df78ad8902c is 12 bytes hexadecimal number. > First 4 bytes (7df7) --> Current Timestamp. > Next 3 bytes (8ad) --> Machine ID. > Next 2 bytes (89) --> Process ID. > Last 3 bytes (02c) --> Incremental Value.

mongodb find operator

db.collection_name.find({this sector name is query_parameter.you can apply condition this area.},{this area name is projection_parameter})
    for example:---
    db.collection_name.find({price:($lt:"1000")},{});
        >  $lt = less then
        >  $lte = less then equal
        >  $gt = greater then
        >  $gte = greater then equal
        >  $eq = equal
        >  $ne = not equal 
        >  $in = in equal (it's working multiple. so it   work with array)
        >  $nin = not in equal
        
        >>>>> Logical Operators <<<<<<
                * $and
                * $or


        >>>>> find Limit <<<<<<
            for example :
                db.collection_name.find().limit(Number)


        >>>>> Sort Records <<<<<<
            for example :
                db.collection_name.find({},{title:1}).sort({title:1}).limit(Number)

mongodb Update operator

db.collection_name.updateOne({this sector name is selection_parameter.},{New data})
    for example:---
        db.collection_name.updateOne({id: 2868},{$set:{title:"new title", price:"new Price"}});