running an api 24/365
DESCRIPTION
How to keep a popular API up an running 24 hours a day, 365 days a year. Presentation by Federico Hernandez, Västtrafik from Nordic APIs Copenhagen in May 2013.TRANSCRIPT
Federico Hernandez
24/7
24/7/365
24/7/365
24/365
24/365 !
(24/7/52)
WEB ??? 000 APP ??? 000 API ??? 000
Write program that do one thing and
do it wellUnix philosophy Doug McIlroy
$ curl localhost:5432/cmi/status { "nodeTime": "2013-05-20T13:41:52", "activeSubscriptions": 892, "totalNumberOfSubscribers": 1019, "totalNumberOfSubscriptions": 1801, "sentMessagesPerMinute": 0, "tsConnections": [ "HafasServerClient [be1/123.456.789.123:40301], managed connections: 232", "HafasServerClient [be1/123.456.789.123:40302], managed connections: 251", "HafasServerClient [be2/123.456.789.125:40301], managed connections: 234", "HafasServerClient [be2/123.456.789.125:40302], managed connections: 212" ] }
Statistik för Mon 2014-05-05 ============================ !Antal sökningar --------------- Searches: 1203498 !!Klienter -------- WEB: 100323 (8.336%) IPHONE: 611811 (50.836%) IPAD: 1519 (0.126%) ANDROID: 235191 (19.542%) REST: 251549 (20.901%) [internal usage] (external ca. 800000) XHTML: 3105 (0.258%) !!Typ av förfrågningar -------------------- XMLCON (till/från eller till och från address): 525031 (43.625%) XMLSTATIONBOARD (nästa tur): 289010 (24.014%) XMLCON-BASIC (till och från hållplats): 200035 (16.621%) XMLLOCATING (sökning med gps från mobilen): 163346 (13.573%) XMLJOURNEY: 13547 (1.126%) XMLTARIFF (prisförfrågning): 6091 (0.506%) XMLGIS: 5778 (0.480%) XMLSIMPLEHANDLESTRING (SMS): 660 (0.055%)
Svarstider för beräkningar -------------------------- 0.00s: 937282 (77.880%) 0.01s: 52655 (4.375%) 0.02s: 36363 (3.021%) 0.03s: 12238 (1.017%) 0.04s: 19583 (1.627%) 0.05s: 12027 (0.999%) 0.06s: 9823 (0.816%) 0.07s: 8682 (0.721%) 0.08s: 8591 (0.714%) 0.09s: 9058 (0.753%) --- 0.0s: 1106302 (91.924%) 0.1s: 32175 (2.673%) 0.2s: 32400 (2.692%) 0.3s: 13499 (1.122%) 0.4s: 6921 (0.575%) 0.5s: 3412 (0.284%) 0.6s: 2327 (0.193%) 0.7s: 1688 (0.140%) 0.8s: 1047 (0.087%) 0.9s: 706 (0.059%) --- 0s: 1200477 (99.749%) 1s: 2481 (0.206%) 2s: 291 (0.024%) 3s: 38 (0.003%) 4s: 15 (0.001%) 5s: 166 (0.014%) 6s: 5 (0.000%) 7s: 1 (0.000%)
Eric Raymond’s 17 Unix Rules
...!Rule of Modularity!
Rule of Composition!Rule of Separation!Rule of Simplicity!Rule of Parsimony!
Rule of Robustness!...
