10月22日，有澳洲网友爆料，大猩猩、仓鼠和船长以及整个拍摄团队于澳大利亚当地时间10月20日到达达尔文。三台闪亮的GT跑车（亮黄色宾利欧陆、黑色宝马M6、蓝色GTR）在达尔文郊区恭候大驾。此后，三人驾驶车辆在南部靠近Batchelor地区Territory的机场跑道上进行直线加速赛。他们究竟在讲（e）述（gao）怎样的故（duan）事（zi）依然不得而知。姑且祈祷这是一段从达尔文到阿德莱德的史诗大片吧。那里可有着长达286公里的斯图尔特不限速高速公路。还有传言称他们22日在松溪的露天煤矿进行过拍摄。
而大猩猩本人也在22日发布了一张拍摄现场的玩火照片。从仪表盘来看，他显然驾驶的是那台黑色M6.

一

As is vividly bebrayed/depicted in the drawing/picture/photo above,          . The drawing does mirror a common social phenomenon and is thought provoking.

The implied meaning of the drawing should be taken into account seriously.The current social phenomenon should aroused the great concern of our society.

In my view,         , in order to eliminate the current evil phenomenon revealed in the drawing, relevent laws and regulations must be established to          .Only in this way/Only by these means can           .

Fortunately, this serious social problem has been taken into acount by our govermental departments and the public. Such measure as legal provisions and social education activities have been put farward. As  a result, we have witnessed some improvements in this recent years. Only when all of us respect and take care of all old people can this problem be solved thoroughly, and can our society be a better one.

二

My dear Jim,

It pains me greatly to learn that you have been leading a life of dissipation and was frequently seen in thd local cabarets, forgeting all about your studies. As a close friend of your father’s, I always have your future walfare at heart. I feel it my duty to ask you to discontinue such a senseless mode of life. Because you have so kind a father to enable you to get a good education. You should take advantage to your study so as to prpare yourself for some useful career in the future. It will be too late for you to repent when someday you will be called upon to make your living and find yourself utterly unfit for anything as a result of your indulgence in present-seeking.

My boy, I hope you will seriously think over my blunt but sincere advice and rectify your blunders at once.

Yours sincerely,

Li Lei

三

As is demostrated in the table,         ,which is a serious problem to           as well as a hindrance to           . It’s estimated that         .

There are several reasons for this phenomenon. In the first place,         . In the second place,          . Last but not least,         .

Serious as the problem seens, we can come up with some measures  to deal with it. On one hand,         . On the other hand,          . With the joint efforts of all of us,          will surely be solved soon.

四

When it comes to          , different people may have different answers. Some refer to          , while others may choose to          .

For the first group of people, they may appreciate         . They can          . In addition,         . What’s more,         .

In comparision/On the contrary, those         

However, each coin have two sides, there is a positive aspect and a negative aspect to         .

五

It is my pleasure to recommend Ms.Wang Ying, my top-ranking students, for admission to your department for pursuing a master degree in mathematis.

I’ve taught Wang Ying for two years and found she was intelligent in her studies and always brought up original ideas in class discussions. In addition, she was also capable of clear and logical analysis of comples subjects with her keen mind and make valuable contributions. Moreover, she has a plesant personality and gets along well with her classmates because of her warn and friendly attitudes.

Ms Wang was proved that she can engage in research work as an undergraduate in our university. I’m sure she would perform well in your college.

I recommend her enthusiastically. If you need furder information regarding Ms Wang, do not hesistate to contack me.

Best regards.

六

As his political instrutor, I think Mr Sun is well qualified for the position he seeks. He ranks among the top five in his class, having passed CET-6 and obtain a certificate of intermediate computer skills. Mr. Sun is a studious ,selfless and aspring young man. He wan awarded the title of Three-Good activist by the college last year.

I believe he is a good candidate worthly of your consideration.

更新： 致每一个丢失S/N的伙计   拯救你的丢失S/N的小米路由器Mini的探索总结       ， 抱歉。

miwifi固件下分区情况:Bootloader就是uboot
cat /proc/mtd
dev: size erasesize name
mtd0: 01000000 00010000 “ALL”
mtd1: 00030000 00010000 “Bootloader”
mtd2: 00010000 00010000 “Config”
mtd3: 00010000 00010000 “Factory”
mtd4: 00c80000 00010000 “OS1”
mtd5: 00b2717e 00010000 “rootfs”
mtd6: 00200000 00010000 “OS2”
mtd7: 00100000 00010000 “overlay”
mtd8: 00010000 00010000 “crash”
mtd9: 00010000 00010000 “reserved”
mtd10: 00010000 00010000 “Bdata”
mtd11: 00fa0000 00010000 “firmware”

可以看到如同当初小米宣传的那个样子OS1、OS2，呵呵

备份(u盘挂载点是/extdisks/sda1)
dd if=/dev/mtd1 of=/tmp/Bootloader.bin
dd if=/dev/mtd2 of=/tmp/Config.bin
dd if=/dev/mtd10 of=/tmp/Bdata.bin

还原
mtd -r write /tmp/Bdata.bin Bdata
mtd -r write /tmp/Config.bin Config

最近思考一些网站架构的问题，这两天着重思考了下memcache对于网站架构的作用以及意义。

memcache作为一个很早就出现的网站架构的一环有很重要的历史意义，但随着技术的不断发展，各种不同的中间件在整个系统中的作用也在不断的发生着变化。

myspace曾经作为全世界流量最大的网站，而memcache在myspace的网站架构中起到了至关重要的作用，myspace采用了自行开发的memcache，每台服务器拥有至少64g的内存，全部用来做缓冲，每个服务器缓冲的内容完全相同，每个服务器之间采用类似连锁复制的概念来进行同步，每当一个服务器的cache发生了变化，会从该服务器开始顺序的触发复制更新到所有的cache服务器。

在myspace的架构中，memchache的作用毋庸置疑，没有cahce这一层，只靠sqlserver是无法支撑这么大的流量的，但我并不清楚myspace是在什么阶段引入的cache层，而且在myspace使用的是收费的sqlserver，每台高配的sqlserver需要巨额的授权费，每台8核的服务器，需要支付微软近rmb80万的授权费，这样引入cache层的另一个很重要的作用是减少成本。

现代的数据库服务器都自己带有cache层，同时绝大部分数据库的操作都完全是在内存中完成的，所以数据库的支持能力比起memchache来说，除了多了存储开销以外，就是数据的重新组织，但如果有足够的内存，而经常访问的sql比较固定来说，那么数据库本身的cache层可以部分替代memcache的功效。

无论如何，纯粹做cache的性能是要高于数据库服务器的，这点毋庸置疑，但是要考虑到引入cache层意味着给开发以及部署都带来了新的麻烦，这点是需要有得失权衡的，我思考的建议是，当网站的访问量并不那么大时，不需要引入memcache，直到访问量到达一定的级别，比如数据库服务器如果少于10台，完全没有必要引入memcache，因为此时运营的成本很低，而不考虑cache层无论是开发，部署还是运营都可以减少很大的便利。当访问量进一步增加，此时假设每增加一台数据库可以提供200的并发性能提升，而引入cache层可以提供300的并发提升，此时引入cache层将在性价比上得到体现，当数据库规模比如达到了100台的规模，此时同时维护100台数据库服务器会是一种很大的运营开销，而相对来说cache的运营维护要低很多，所以到不如使用60台cache，40台数据库的架构，如果数据库是收费的，则此时的成本优势则更明显。

综上所述，在网站的访问量规模不大的情况下，尽量不要引入cache层增加网站架构的复杂，带来不必要的运营，开发，测试的麻烦，当访问规模到达一定程度后再考虑使用memcache而提高性价比。