📅  最后修改于: 2023-12-03 15:32:57.332000             🧑  作者: Mango
MongoDB-GridFS is a file storage system used in MongoDB. It provides a way to store and retrieve large files, such as images or videos, as chunks across multiple MongoDB documents.
GridFS is useful when small file size limits of traditional databases are exceeded, as it allows files to be stored and retrieved in chunks with a customizable size of 256KB.
GridFS works by splitting a large file into smaller pieces called chunks. These chunks are then stored in separate MongoDB documents as binary data, and they can be retrieved and reassembled to form the original file. In addition, metadata such as filename, file size and encoding are stored in a separate document.
GridFS supports two types of files:
GridFS is a useful tool in a variety of situations:
GridFS is a powerful tool for managing and serving large files with MongoDB. It provides a scalable and efficient way to store and retrieve files that exceed the size limits of traditional databases. With GridFS, applications can access and manipulate media files with the same ease as any other data stored in MongoDB.
# MongoDB-GridFS
## Introduction
MongoDB-GridFS is a file storage system used in MongoDB. It provides a way to store and retrieve large files, such as images or videos, as chunks across multiple MongoDB documents.
GridFS is useful when small file size limits of traditional databases are exceeded, as it allows files to be stored and retrieved in chunks with a customizable size of 256KB.
## How it Works
GridFS works by splitting a large file into smaller pieces called chunks. These chunks are then stored in separate MongoDB documents as binary data, and they can be retrieved and reassembled to form the original file. In addition, metadata such as filename, file size and encoding are stored in a separate document.
GridFS supports two types of files:
- **Small files** - These are files smaller than the chunk size (default 256KB). Small files are stored inline in a single MongoDB document along with their metadata.
- **Large files** - These are files larger than the chunk size. Large files are split into chunks, with each chunk stored in a separate MongoDB document. The metadata is still stored in a separate document.
## Use Cases
GridFS is a useful tool in a variety of situations:
- **File Sharing Platforms** - Platforms such as Dropbox and Google Drive that store large files can use GridFS to store and retrieve files.
- **Media Streaming** - GridFS can be used to store videos and stream them to users.
- **Backup and Archive Utilities** - Backup and archive utilities can use GridFS to store large databases or repositories of documents.
## Conclusion
GridFS is a powerful tool for managing and serving large files with MongoDB. It provides a scalable and efficient way to store and retrieve files that exceed the size limits of traditional databases. With GridFS, applications can access and manipulate media files with the same ease as any other data stored in MongoDB.