To share files between two Macs on the same network, first make sure that the two devices are connected to the same LAN, then enable file sharing on the host, set shared folders and access permissions, and then connect from another Mac through the access sidebar or manually enter the SMB address, and finally you can browse, copy or transfer files. Common problems include waiting or restarting the network when the device cannot be discovered. If the permissions are incorrect, you need to check the username, password and sharing settings. If the connection fails, you can try the SMB address. If the firewall blocks, you can temporarily close the test.

MongoDBAtlas' free hierarchy has many limitations in performance, availability, usage restrictions and storage, and is not suitable for production environments. First, the M0 cluster shared CPU resources it provides, with only 512MB of memory and up to 2GB of storage, making it difficult to support real-time performance or data growth; secondly, the lack of high-availability architectures such as multi-node replica sets and automatic failover, which may lead to service interruption during maintenance or failure; further, hourly read and write operations are limited, the number of connections and bandwidth are also limited, and the current limit can be triggered; finally, the backup function is limited, and the storage limit is easily exhausted due to indexing or file storage, so it is only suitable for demonstration or small personal projects.

To share your Mac screen with others, you can choose the appropriate method according to different scenarios. First, through video conferencing tools such as Zoom, click the "Share" button to select the screen or a specific window for sharing; second, use Messages or FaceTime to initiate a screen sharing session, click the " " to select "Screen Sharing" and invite the other party to view or control it; third, use the "Screen Sharing" App that comes with the system to enable this function on the target Mac and connect to the server address through Finder to achieve remote access; in addition, you need to pay attention to details such as permission settings, privacy protection and network performance impact.

Mac screenshots themselves do not support scrolling screenshots, but can be implemented through system functions or third-party tools. 1. Use the screenshot tool in macOS to manually splice the preview app: take a segmented screenshot and leave an overlapping area. Drag in the picture through the preview app to export it as a PDF or picture. 2. Safari browser native scrolling screenshots: In macOSMojave and above, press Cmd Shift 4 spaces and click "Enterprise Page" to automatically generate a complete screenshot. 3. Automatic scrolling screenshots for third-party tools: such as Lightshot, Snagit, Shottr, supports shortcut key operations and automatic scrolling screenshots, suitable for frequent use scenarios. Just choose the right method according to your needs.

MongoDB's RBAC manages database access through role assignment permissions. Its core mechanism is to assign the role of a predefined set of permissions to the user, thereby determining the operations and scope it can perform. Roles are like positions, such as "read-only" or "administrator", built-in roles meet common needs, and custom roles can also be created. Permissions are composed of operations (such as insert, find) and resources (such as collections, databases), such as allowing queries to be executed on a specific collection. Commonly used built-in roles include read, readWrite, dbAdmin, userAdmin and clusterAdmin. When creating a user, you need to specify the role and its scope of action. For example, Jane can have read and write rights in the sales library, and inve

To find the Library folder on your Mac, you can follow the following steps: 1. Open the Finder window; 2. Click "Go" in the top menu bar; 3. Press and hold the Option (?) key to make the "Library" option appear; 4. Click to enter the Library folder. This folder contains subfolders such as application support files, caches, preferences, logs, and keychains, and is suitable for debugging applications, clearing caches, or managing extensions. If you need frequent access, you can run the "chflagsnohidden~/Library/" command through the terminal to make it permanently displayed. If you hide it again, use "chflagshidden~/Library/".

To change the default Mac application, first, for the file type: right-click the file → "Show introduction" → "Open method" and select the application and click "Change all"; secondly, for browser, email and other system services, you can specify it separately in "System Settings" → "Default Applications"; if the target application does not appear, you can try to run the program manually, register or uninstall the reinstallation application in your preferences.

MongoDBconnectionpoolingworksbymaintainingreusabledatabaseconnectionstoimproveperformance.1)Driverscreateinitialconnectionsatappstart.2)Whenaqueryruns,anidleconnectionistakenfromthepool.3)Afteruse,theconnectionreturnstothepoolinsteadofclosing.4)Ifall