Multiple MongoDb databases configuration -

-

I need to create a large number of MongoDb databases, some around 1000 +, later it will be more than 3000.

They will be hosted on a server with SSD discs and in most databases there are approximately 20-30 archives with more than 500 objects, most of the object size is between 10-50kb, then in the size of the data There will be a bit relatevely.

My question is how should I configure the creation of these mongodb databases, in order to use the disk space in the most effective way. I have read that mongodb allocates empty disk space and can take up to 100 MB in an empty database size, is there a way to reduce this size?

You can set the configuration option to True. This will shorten the initial data and journal files. From MongoDB Docs:

Storage. The Mallfiles option reduces the initial size for data files and limits the maximum size up to 512 megabytes Storage.smallFiles reduces the size of each journal file from 1 gigabyte to 128 megabytes. Use storage. If you have a large number of databases, then each data contains a small quantity.

Depending on your workload, you can also change it. will use less storage space than the exact fit allocation power of 2 (which is a default allocation strategy for v2.6 +).

Edit

Together with the smallFiles option for an empty database (let's call it DB 01), Mongodi will create two files which is 16 MB big:

  1. db01.0 -

    As you add documents to your archive, MongoDB will create additional files for data with size: the next one is 32MB (db01.1), followed by a 64MB (db01. 2) will ... up to 512MB. Therefore, if you have only 50 MB of data (if you are worried about it) for your database, 1GB will not be undone like Mongodi.

    If you are concerned about only disk size (on small SSD), you can also use. Each database will have its own directory, which you can link to any other disk.

Comments

Post a Comment

Popular posts from this blog

ios - Adding an SKSpriteNode to SKScene from a child SKSpriteNode -

-
I have a SKScene where I am adding an SKSpriteNode I have subclassed the SKSpriteNode class to create this node. In the subclass I am defining some SKActions on Sprite. What do I want to do when the end of this phantom ends the SKAction sequence, then I add a new Prayer node to this scene. How is this possible. The following code is mine: The code for the sequence is that I'm running on the Scansprinitode subclass (TEMissileNode): - SKAction * moveDown = [SKAction moveToY: Self.position.y - 20 Duration: 0.2]; SKAction * animation = [SKAction animateWithTextures: textures timePerFrame: time / 7]; SKAction * moveMissileProjectile = [SKAction Moving: Pointoffscreen Term: Time]; SKAction * group = [SKAction group: @ [animation, movement projectile]]; SKAction * Sequence = [SKAction Sequence: @ [Hilldown, Group, [SKAction removalFromParent]]]; [Self run action: sequence]; From the main scene, I call those actions that execute these tasks TEMissileNode * missile = [tmissil...
Read more

Matlab transpose a table vector -

-
An embarrassing simple question seems to be, but how can I move a Matlab table vector? aTableT = aTable '; I tried a standard syntax for the simple interaction of a line vector to a line vector aTable : ATableT = reshape (aTable, 1, Height (aTable)); and aTableT = rot90 (aTable); According to the head, the last time table should work for table, see. However, I get this error code: Error type in using table / permit (line 396) Undefined function 'permute' for the input arguments. Error in rot 90 (line 29) b = magnitude (b, [2 1 3: ndims (a)]); NB: fliplr is not useful either pretty sure I have covered clear angles - any ideas? Thanks! Try changing your table into an array, move it, then back to a table In other words, try doing this: aTableArray = table2array (aTable); ATableT = array 2table (aTableArray. '); I have also read the document for rot90 , and it says that rot90 is definitely working for tables Do, and I find you...
Read more

c# - Textbox not clickable but editable -

-
I have a small form with 10 text boxes, I have set them in the correct tab order. I want them on my tab service I was wondering if there is a way to set the text box so that they can be selected for editing until they are tabbed. That is ... I do not want the end user to edit the text box to click on them, I just want to make them editable through tabu. this should do the trick public partial category poor text box: Text Box {Safe Override Zero WndProc (Ref: Message Message) {if (m.msg == (Int) WM.LBUTTONDOWN) {Return; // mount down events} base.WndProc (ref m); }} Window message enum can be found. How to do this without anherizing: text box : class EatMouseDown: netwindows {safe override zero WndProc (ref message message) {if (m.msg == (int) WM.LBUTTONDOWN) {return; } Base.WandProc (Ref M); }} Safe Override Zero Onload (EventEurge E) {base.OnLoad (e); How to do this without any part: left a clean part, whatever is important, this can be a buggy but it works R...
Read more