Repo Link ⇒ https://github.com/c2siorg/Codelabz

Live Link → https://codelabz-2cd64.web.app/

Firebase Services

Firebase Firestore

• data -> string(image url), number
• document model database
• collections { documents -> fields { collections ... } } addDoc(collection(db, "") { }) q = query(collection(db, ""),where(),) getDocs(q).then()
• database rules -> database.rules.json
• configuration -> firebase.json
• project information -> .firebaserc
• faster reading
• collection group queries(collectionID, fieldPath, index)
• queries - limit
• composite indexes (concatenation of two columns)
• index is added automatically whenever a document is created
• time to run a query is proportional to number of results you get back (but not number of documents you are reading)
• charged for number of reads, writes, deletes
• security rules -> get(), exists() - considered as reads
• denormalisation