Apparatus, system and method for selecting a stream server to which to direct a content title

1. A method of selecting a stream server of a plurality of stream servers to which to direct a content title, the method comprising:

(a) evaluating a cache ease-of-entry for each of a plurality of levels of a cache hierarchy for the plurality of stream servers; and

(b) selecting the stream server from the plurality of stream servers to receive a content title, the selected stream server having a most favorable cache ease-of-entry over the plurality of levels of the cache hierarchy;

(c) if none of the plurality of stream servers has a most favorable cache ease-of-entry over the plurality of levels of the cache hierarchy, selecting a stream server of the plurality of stream servers with a lowest miss traffic to which to direct the title; and

(d) if none of the plurality of stream servers has a lowest miss traffic, selecting a stream server of the plurality of stream servers with a lowest stream traffic to which to direct the title.

2. The method of claim 1 , further comprising:

setting the selected stream server as a one-and-only preferred server for the content title.

3. A stream director configured to interface to a plurality of stream servers and to select a stream server of a plurality of stream servers to which to direct a content title, the stream director further configured to:

(a) evaluate a cache ease-of-entry for each of a plurality of levels of a cache hierarchy for the plurality of stream servers; and

(b) select the stream server from the plurality of stream servers to receive a content title, the selected stream server having a most favorable cache ease-of-entry over the plurality of levels of the cache hierarchy;

(c) if none of the plurality of stream servers has a most favorable cache ease-of-entry over the plurality of levels of the cache hierarchy, select a stream server of the plurality of stream servers with a lowest miss traffic to which to direct the title; and

(d) if none of the plurality of stream servers has a lowest miss traffic, select a stream server of the plurality of stream servers with a lowest stream traffic to which to direct the title.

4. The stream server of claim 3 , further configured to:

set the selected stream server as a one-and-only preferred server for the content title.

5. A method of selecting a stream server of a plurality of stream servers to which to direct a content title, the method comprising:

(a) comparing a top-tier cache ease of entry for each of the plurality of stream servers;

(b) if one of the plurality of stream servers has a more favorable top-tier cache ease of entry than each of the other stream servers, selecting the one stream server with the more favorable top-tier cache ease of entry to which to direct the title;

(c) if the top-tier cache ease of entry for all of the plurality of stream servers is equal, comparing a next-lower-tier cache ease of entry for each of the plurality of stream servers;

(d) if one of the plurality of stream servers has a more favorable next-lower-tier cache ease of entry than each of the other stream servers, selecting the one stream server with the more favorable next-lower-tier cache ease of entry to which to direct the title;

(e) if none of the plurality of stream servers has a most favorable cache ease-of-entry over a plurality of levels of a cache hierarchy, selecting a stream server of the plurality of stream servers with a lowest miss traffic to which to direct the title; and

(f) if none of the plurality of stream servers has a lowest miss traffic, selecting a stream server of the plurality of stream servers with a lowest stream traffic to which to direct the title.

6. The method of claim 5 , further comprising:

(g) if the next-lower-tier cache ease of entry for all of the plurality stream servers is equal, comparing a lowest-tier cache ease of entry for each of the plurality of stream servers; and

(h) if one of the plurality of stream servers has a more favorable lowest-tier cache ease of entry than each of the other stream servers, selecting the one stream server with the most favorable lowest-tier cache ease of entry to which to direct the title.

7. The method of claim 6 , further comprising:

(i) if the lowest tier cache ease of entry for all of the stream servers is equal, comparing miss traffic for each of the plurality of stream servers; and

(j) if one of the plurality of stream servers has a lower miss traffic than each of the other stream servers, selecting the one stream server with the lower miss traffic to which to direct the title.

8. The method of claim 7 , further comprising:

(i) if the miss traffic for all of the stream servers is equal, comparing stream traffic for each of the plurality of stream servers; and

(j) selecting a stream server with a lowest stream traffic to which to direct the title.

9. The method of claim 5 , further comprising:

setting the selected stream server as a one-and-only preferred stream server for the content title.

10. A content streaming system, comprising:

a plurality of content servers; and

a stream director;

the stream director configured to

(a) compare a top-tier cache ease of entry for each of the plurality of stream servers;

(b) if one of the plurality of stream servers has a more favorable top-tier cache ease of entry than each of the other stream servers, select the one stream server with the more favorable top-tier cache ease of entry to which to direct the title; and

(c) if the top-tier cache ease of entry for each of the plurality of stream servers is equal, compare a next-lower-tier cache ease of entry for each of the plurality of stream servers;

(d) if one of the plurality of stream servers has a more favorable next-lower-tier cache ease of entry than each of the other stream servers, select the one stream server with the more favorable next-lower-tier cache ease of entry to which to direct the title;

(e) if none of the plurality of stream servers has a most favorable cache ease-of-entry over a plurality of levels of a cache hierarchy, select a stream server of the plurality of stream servers with a lowest miss traffic to which to direct the title; and

(f) if none of the plurality of stream servers has a lowest miss traffic, select a stream server of the plurality of stream servers with a lowest stream traffic to which to direct the title.

11. The system of claim 10 , the stream director further configured to:

(g) if the next-lower-tier cache ease of entry for all of the plurality stream servers is equal, compare a lowest-tier cache ease of entry for each of the plurality of stream servers; and

(h) if one of the plurality of stream servers has a more favorable lowest-tier cache ease of entry than each of the other stream servers, select the one stream server with the most favorable lowest-tier cache ease of entry to which to direct the title.

12. The system of claim 11 , the stream director further configured to:

(i) if the lowest tier cache ease of entry for all of the stream servers is equal, compare miss traffic for each of the plurality of stream servers; and

(j) if one of the plurality of stream servers has a lower miss traffic than each of the other stream servers, select the one stream server with the lower miss traffic to which to direct the title.

13. The system of claim 12 , the stream director further configured to:

(k) if the miss traffic for all of the stream servers is equal, comparing stream traffic for each of the plurality of stream servers; and

(l) selecting a stream server with a lowest stream traffic to which to direct the title.

14. The system of claim 10 , the stream director further configured to set the selected server as a one-and-only preferred server for the content title.