Add upgrade strategy to docs

Issue-ID: OPTFRA-672
Signed-off-by: krishnaa96 <krishna.moorthy6@wipro.com>
Change-Id: I8a503a3aff1b4a92c4ba04cea258c171d00213f4

diff --git a/docs/sections/upgradestrategy.rst b/docs/sections/upgradestrategy.rst
new file mode 100644 (file)
index 0000000..6357fac
--- /dev/null
+++ b/docs/sections/upgradestrategy.rst
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+..
+ This work is licensed under a Creative Commons Attribution 4.0
+ International License.
+
+================
+Upgrade Strategy
+================
+
+OSDF can be upgraded in place(remove and replace) or in a blue-green
+strategy.
+
+There is no need for database migration. Since, there is no database
+being used by OSDF.
+
+Supporting Facts
+================
+
+OSDF is a stateless component. It doesn't store any information in the
+database. It holds on to the optimization request in memory only until
+the optimization process is complete. The optimization is done either by
+OSDF itself or other external components(such as HAS) are leveraged for
+optimization.