attish questions

attish answers

• mongodb shard key hash algorithm
• Does MongoDB journaling guarantee durability?
• Indexing MongoDB for quicker find() with sort(), on different fields
• How to use backup and restore all databases from mongodb?
• Get last documents with a distinct criteria
• MongoDB $query operator ignores index?
• Parquet vs Delta format in Azure Data Lake Gen 2 store
• Mongodb - sharded and unsharded collections
• can't shard a collection on mongodb
• MongoDB query to find property of first element of array