(do not rely on this as a current statement of the law)
Factors to consider
The extent to which the earning capacity of each party is sufficient to maintain the standard of living established during the marriage considering:
Retention of Jurisdiction
There is a presumption that a marriage of 10 years or more, from the date of the marriage to the date of separation, is a marriage of long duration (FC 4336).
Modification of Agreement
An agreement for the support of either party is subject to subsequent modification or termination by the court except;
an agreement may not be modified or terminated prior to filing date; and
an agreement may not be modified if there is a written agreement specifically providing that spousal support is not subject to modification or termination (FC 3591)
Termination of Support
The Obligation for spousal support in California terminates upon death of either party or the remarriage of the supported party (FC 4337).