产品名称：77985 线坠/建筑用具/日本亲和SHINWA牌

特长

●外壳的各个部位带有防渗水板，因弹簧采用不锈钢弹簧的材料，水渗入也没有关系。 ●使用100～850g的线锤不用平衡调整。 ●简洁、小巧的尺寸、线长5m。1楼、2楼可以看到 ●3600的强力磁石，铁的部分能结实的固定。 ●针简单插入或拔除构造设计。

规格

Websites without bankrupting a small company

I’m mainly interested in opinions on the trade-Offs between having a single central server all the websites connect to as opposed to each website mirroring a subset of the master database with all the products in it.For example, will i run into severe performance issues(Or even security issues, or restrictions)Making queries to an offsite database?Will we hit scalability issues we can’t handle early on from the sheer bandwidth required to maintain this?If we do go with something like a script that keeps smaller databases(Each containing a subset of the central master data)In sync, what sorts of issues will we likely encounter there?I would really like the opinions of people far more knowledgeable than i am regarding the pros and cons of both setups and what headaches we are likely to encounter.


Clarification:This should not be viewed as a question about whether we should implement one database vs multiple databases.This question has been answered numerous times.The question is regarding the pros and cons for a deployment like this having the ability to manage all the websites centrally(One server)Vs trying to keep them all in sync if they each have their own db(Multiple servers).


Real-World example:We are a t-Shirt company, and we have individual websites for our different kinds of t-Shirts, but we’re looking at a central order management integrated with our single shopping cart(Which is coldfusion + mysql).Now, let’s say we have a t-Shirt that’s on 10 of our websites and we change an image for it.Ideally we would change that in one place and gccc the change would propagate, but how would we set this up?


It sounds like what you are asking about is database replication.You’d set that up with your mysql servers to replicate changes made to, say, a master product table over to product tables in the various databases for the individual sites.Such replication can http://www.gccc.ca/ be done between databases on either the same physical server or different ones.


That said, doing so seems needlessly complex when you can just use one shared db for all the stores and just have the individual stores filter on those products it can display.A master inventory control panel could be made to assign products to sites.If traffic then becomes an issue, you can replicate the single master database to other database servers, and point read-Only queries over to the replicated copy of the database(Read from many, but only write to the master db).

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规格：

特长
●外壳的各个部位带有防渗水板，因弹簧采用不锈钢弹簧的材料，水渗入也没有关系。
●使用100～850g的线锤不用平衡调整。
●简洁、小巧的尺寸、线长5m。1楼、2楼可以看到
●3600的强力磁石，铁的部分能结实的固定。
●针简单插入或拔除构造设计。
●可对同一面的测量。
用途
●用于柱子、墙面等垂直·铅直的确认。
●将水线的位置降至水泥地面的时候。

用途

●用于柱子、墙面等垂直·铅直的确认。 ●将水线的位置降至水泥地面的时候。