the art of scalability scalable web architecture processes and organizations for the modern enterprise phần 6 ppsx

... demand fore- cast and handing it off to the person responsible for capacity analysis and planning. The capacity planner takes a look at the types of demand forecasted by the business unit and ... may be the purchase of new systems, a change in the architecture of certain components of the platform, such as the data model or the movement of demand from one...

Ngày tải lên: 14/08/2014, 17:21

... that the CTO creates and runs are the lifeblood of the business units and the heart of the back office systems that the CFO needs to do his or her job. We have indicated that the CTO’s organizations ... vision are the CTO’s peers the people who rely on the CTO for either the availability of the product or the back office systems that run the company....

Ngày tải lên: 14/08/2014, 17:21

... of root cause) are often in conflict with each other. The rapid restoration of ser- vice often conflicts with the forensic data gathering necessary for problem management. Maybe the restart of ... chapter. We started by looking at the purpose of processes and determined that they serve three general pur- poses: they augment the management of our teams and employees...

Ngày tải lên: 14/08/2014, 17:21

... 9. 36 4.92 8.1 9.24 6. 18 5 .64 6. 12 7.08 8. 76 7 .62 8.58 5 .6 9.02 8.89 7.74 6. 61 ptg5994185 200 CHAPTER 12 EXPLORING ARCHITECTURAL PRINCIPLES • Bring the team together for small presentations and then ... some form of the RASCI model, you may also decide to require that the appropriate A, or owner of the system in question, has signed off on the change and is aw...

Ngày tải lên: 14/08/2014, 17:21

... factor such as the difficulty of the task, the amount of effort required for the task (the more effort generally the higher the risk), the interaction of this component with others (the more connected ... administrators, and other JAD members; therefore, a very informal setting is our preference. The formality should come from the fact that there will be a go or...

Ngày tải lên: 14/08/2014, 17:21

... successful scalability of your system and the adoption of the performance and stress testing processes. As we cautioned previously in the discussion of the stress test, the creation of the test ... tradeoff. This process of listing out the tradeoffs, determining pros and cons, and then analyzing each one is the second method of performing a tradeoff anal...

Ngày tải lên: 14/08/2014, 17:21

... the time of the request by looking up the username and determining the password or performing a geo-location test of the requestor IP address, we have performed a z-axis split. For the sake of ... exception of the customers for whom we have no sales data and therefore just represent a contact list. This set of customers actually represents the largest group b...

Ngày tải lên: 14/08/2014, 17:21

... abstrac- tion of the layered model of network architecture. It is used to describe the different compo- nents of the network and how they are interrelated. There are seven layers, and starting from the ... the “avail- ability” of the string of lights was the product of the availability (1 the probability of failure) of all the lights. If any light had a...

Ngày tải lên: 14/08/2014, 17:21

... contains the copy for which it is a master (33% of the data necessary to run the site) and 50% of the copies of each of the other sites ( 16. 5% of the data necessary to run the site for a total of an additional ... over time for the purposes of comparison. We can compare the rates of errors for each of our services by error type for the time...

Ngày tải lên: 14/08/2014, 17:21

... splits cost, 363 , 364 description, 362 – 365 handling size and complexity, 364 noun perspective, 363 pros and cons, 363 – 364 purpose of, 362 – 363 summary of, 367 –370 transaction processing time, 364 vs. ... amount, 361 pros and cons, 360 – 362 reliance on third parties, 360 – 362 replication delays, 359– 360 , 361 summary of, 367 –370 time to market, 360 – 361 vs. y-a...

Ngày tải lên: 14/08/2014, 17:21