minor L15

lectures/L15-slides.tex

@@ -46,7 +46,7 @@
 
 Max C requests to change your user data per day, and a max of D requests of any type per day in total?
 
-Slow down vs just reject? We'll just reject for now.
+Slow down vs just reject? We'll just talk about rejection for now.
 
 \end{frame}
 
@@ -145,7 +145,7 @@
 
 If the rate limit is super high compared to usage, no problem.
 
-Hitting the rate limit regularly? Frustrating or could get us banned!
+Hitting the rate limit regularly? Frustrating, or could get us banned!
 
 \end{frame}
 
@@ -193,7 +193,7 @@
 Remember what we discussed about write-through and write-back caches.
 
 It can be difficult to know if the data is changed remotely.\\
-\quad Use domain knowledge here! e.g., exchange rate quotes valid 20 mins.
+\quad Use domain knowledge here! e.g., exchange rate quotes valid 20 minutes.
 
 \end{frame}
 
@@ -208,16 +208,16 @@
 
 There do need to be things to group with...
 
-And perhaps the remote API has to support it.
+And the remote API has to support it.
 
 \end{frame}
 
 \begin{frame}
 \frametitle{Bigger Requests, Bigger Parsing}
 
-Grouping requests may also make it hard to handle what happens if there's a problem with one of the elements in it. 
+Grouping requests may also make it hard to handle if there's a problem with one of the elements in it. 
 
-If we asked to update five employees and one of the requests is invalid, is the whole group rejected or just the one employee update?
+If we asked to update five employees and one of the requests is invalid, is the whole group rejected or just the one employee update? (Is it a transaction?)
 
 Consider the risks of more complex logic.
 
@@ -332,6 +332,7 @@
 \frametitle{Schedule Later}
 
 For requests that are not urgent, then another option is to schedule the requests for a not-busy time.
+(Conversely, CPUs have burst mode, which makes them go faster when busy).
 
 \begin{center}
   \includegraphics[width=0.7\textwidth]{images/popular-times.png}
@@ -382,7 +383,7 @@
 
 That's not a disaster, as long as we handle it the right way. 
 
-The right way is not try harder or try more; if we are being rate limited then we need to try again later, but how much later?
+The right way is not try harder or try more; if we are being rate limited, then we need to try again later. But how much later?
 
 \end{frame}