There's two sorts of large systems

A lot of what I think about and do is keeping large computer systemsrunning. In an online discussion recently I've (re)realized that thereare two different sorts of 'large systems', each with very differentchallenges.

One sort of 'large system' is large because it handles a lot, forexample a mail system that handles email for 25,000 people on asingle, beefy machine. Running a single large machine like this ismostly a matter of tuning, and it


想起魯迅

很久沒有筆戰——但即使是做論文,看李歐梵《現代性的追求》,就會強烈地思念魯迅。

但你知道,其實我最記得魯迅什麼嗎?在他死前不久,他自知命不久矣,在散文裡明確宣告:

我一個都不原諒。

七一快樂

零五七一,驟雨還晴,消了地上暑氣,正是遊行的好天氣。進入天后方向的維園入口,看見很多人都別上了「七一人民批」售賣的七彩煲呔。人人各有顏色,人人都可以是煲呔——七一始終那麼令人快樂。

進入維園之前很擔心人

如有需要... 下集

1/7 有位人提供了另一個可能有d問題的殘障人士廁,
地點在粉嶺駢和墟帝庭軒商場:如需協助, 請致電31254111 與保安部聯絡 .
不過我想問問以上的提供者? 你知唔知那個殘廁是否鎖上了呢?

中原地圖加入 Google Maps 衛星圖連結

cmgm

之前講過 Google Maps 看到全世界,但只有圖,沒有資料,想要在 Google Maps 找香港的地方,還是要自己爬地圖,好玩但不實用。而對於香港人來說,我們常用的網上地圖是 中原地圖 ,雖然因為載入時和瀏覽很慢,但除此之外也沒有什麼好挑


支持最多的瀏覽器?

tcfi Paulasaurus Rex 的 Blog 是一個製作精美的 Blog ,他裏面有一個「活動」,叫 “Too Cool for Internet Explorer”,因為他的網站, Firefox, Safari, Opera 等等都可以顯得很正確,唯獨用 IE 看會走位,顯示有問題。目的當然是籍此推廣 Web Standards ,讓大家知道 IE 有多落後。

其實,要用


Checking for dead DNSBls

Another Saturday, another spam entry. Today I decided to look at ourlogs to see if some of the DNSBls we check had either gone away orweren't giving us any hits. Since our software checks DNSBls insequence instead of in parallel, removing useless DNSBls both reducesquery volume and speeds things up slightly.

(In general, it's wise to do this periodically unless you're currenton news.admin.net-abuse.email and other information sources, andalready know about any changed


人機介面

mmi

對於我們使用電腦,最主要都是用手和眼,然而再進一步,就可能是通過人機介面,直接由我們的腦部,傳送訊號到電腦。這個情形,在不少的科幻作品都可以見到,例如《攻殼機動隊》裏,因為電子腦的盛行,所以大家都可以


What shouldn't be a method function

I dislike excessive religion, so I don't hold to the view thateverything should be a method function. Fortunately, Python lets meindulge this view.

My rule of thumb is that any method function that doesn't use its self argument to get at things gets made into a normal module levelfunction. This reduces clutter on the class (and in the source code)and makes what's really going on clear to me and any later readers.

Of course there are some exceptions, such as:


強戰世界 – 世界毀滅的臨場體驗

地球面臨威脅,外星人入侵,大量殺戮,死傷無數。《 War of the Worlds 強戰世界》講的就是在這個情況下,從一個普通的家庭的角度,寫實地描述人們在面臨滅絕下的反應和求生過程。

船塢工人雷費拉家前的交匯處發生了極奇可怕的事