| 摘要 |
<p>The present document relates to cloud computing. In particular, the present document relates to methods and systems for cloud computing which enable the efficient and flexible placement of application components within a cloud. A first computing device (101) is described, wherein the first computing device (101) is adapted to host a first component (703) of an application (700); wherein the first component (703) sends data according to a first load via a first communication link (401) to a second component (703) of the application (700), hosted on a second computing device (101); wherein the first computing device (101) is adapted to receive a component placement request for a third component (703) of the application (700); wherein the third component (703) receives data from the first component (703) according to an ingress load; wherein the third component (703) sends data to the second component (703) according to an egress load; wherein the computing device (101) comprises a local resource list (601); wherein the local resource list (601) comprises information indicative of link load cost functions on the first communication link (401) and on at least one neighbour communication link (401) to at least one neighbour computing device (101) positioned in a neighbourhood of the first computing device (101); wherein the computing device (101) is adapted to determine whether to place the third component (703) on the first computing device (101) or whether to forward the component placement request to the second computing device (101) or to the at least one neighbour computing device (101), based on the first load, the ingress load, the egress load and the link load cost functions on the first communication link (401) and on the at least one neighbour communication link (401).</p> |
