WebFund 2013F Lecture 19 - Revision history

Soma at 19:11, 29 November 2013

2013-11-29T19:11:05Z

← Older revision		Revision as of 19:11, 29 November 2013
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			The audio from the lecture given on November 25, 2013 is available [http://homeostasis.scs.carleton.ca/~soma/webfund-2013f/lectures/comp2406-2013f-lec19-25Nov2013.m4a here].

	==Notes==		==Notes==
	==Assignment 4 remarks		==Assignment 4 remarks

Sarahmathieson at 23:53, 25 November 2013

2013-11-25T23:53:48Z

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	* Shouldn’t need to use prototypes at all in assignment		* Shouldn’t need to use prototypes at all in assignment
	# Before insert, do a lookup		# Before insert, do a lookup
	** If there, you have the document and edit that		## If there, you have the document and edit that
	# Search for a special room called “start”		# Search for a special room called “start”
	** Start is not a room, it’s a room pointer		## Start is not a room, it’s a room pointer
	** Can put description of a room in there		## Can put description of a room in there
	** Could have everything linked to the start room		## Could have everything linked to the start room
	~~***~~ Have all rooms exit to start		### Have all rooms exit to start
	~~***~~ Title won’t be start		### Title won’t be start
	# JavaScript string replace		# JavaScript string replace
	** Don’t use a for-loop		## Don’t use a for-loop
	~~***~~ There are nice string manipulation routines in JavaScript		### There are nice string manipulation routines in JavaScript
	# TA’s will be using their own custom database to test code		# TA’s will be using their own custom database to test code
	# Look up how to do file uploads		# Look up how to do file uploads
	** Might do this in tutorial		## Might do this in tutorial
	** Don’t have to do string checking, just have to check objects to make sure all fields are there and they aren’t undefined		## Don’t have to do string checking, just have to check objects to make sure all fields are there and they aren’t undefined
	** Do all the exits refer to a room that actually exists?		## Do all the exits refer to a room that actually exists?
	~~***~~ Not super important to do		### Not super important to do
	** Each room has name, title, description exits, has a start room		## Each room has name, title, description exits, has a start room
	~~***~~ Can say valid		### Can say valid
	# Have to validate the data structure		# Have to validate the data structure
	** Have to make sure you don’t import garbage		## Have to make sure you don’t import garbage
	# Don’t have to do this with AJAX		# Don’t have to do this with AJAX
			==non assignment stuff==
	** To get style points, probably going to have to do something nice		** To get style points, probably going to have to do something nice
	*** Probably don’t want to have to press submit a million times		*** Probably don’t want to have to press submit a million times

Sarahmathieson: Created page with "==Notes== ==Assignment 4 remarks * Shouldn’t need to use prototypes at all in assignment # Before insert, do a lookup ** If there, you have the document and edit that # Sear..."

2013-11-25T23:52:32Z

Created page with "==Notes== ==Assignment 4 remarks * Shouldn’t need to use prototypes at all in assignment # Before insert, do a lookup ** If there, you have the document and edit that # Sear..."

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==Notes==
==Assignment 4 remarks
* Shouldn’t need to use prototypes at all in assignment
# Before insert, do a lookup
** If there, you have the document and edit that
# Search for a special room called “start”
** Start is not a room, it’s a room pointer
** Can put description of a room in there
** Could have everything linked to the start room
*** Have all rooms exit to start
*** Title won’t be start
# JavaScript string replace
** Don’t use a for-loop
*** There are nice string manipulation routines in JavaScript
# TA’s will be using their own custom database to test code
# Look up how to do file uploads
** Might do this in tutorial
** Don’t have to do string checking, just have to check objects to make sure all fields are there and they aren’t undefined
** Do all the exits refer to a room that actually exists?
*** Not super important to do
** Each room has name, title, description exits, has a start room
*** Can say valid
# Have to validate the data structure
** Have to make sure you don’t import garbage
# Don’t have to do this with AJAX
** To get style points, probably going to have to do something nice
*** Probably don’t want to have to press submit a million times
* Always time costs when you distribute a system
* How’s it going to fail?
** Anything from a database is expensive
* Want a static webserver for front end
** Incoming requests first go through here, if it can handle it, it will hand it off and respond
** If it can’t, it will send it back
* Gets don’t change server state, posts do
* Gets can be cached
* CDN
** Content Distribution Network
** Some combination between static servers and caching
* Reading is never a problem
* Searches are easy
* Writes are what slow you down
** Cannot be automatically replicated
** Changed the state of part of your database, essentially your data structure
** This is what limits database scalability
* Fred Brooks