content: <PAGE>
   
  ================================================================================
  
                        SECURITIES AND EXCHANGE COMMISSION
  
                              WASHINGTON, D.C.  20549
  
  
  
                                     FORM 8-K
                                  CURRENT REPORT
  
  
  
                        Pursuant to Section 13 or 15(d) of
                        the Securities Exchange Act of 1934
  
  
  
  
       Date of Report (Date of earliest event reported):  December 29, 1998
  
  
  
  
  
   
                                INKTOMI CORPORATION
  
              (Exact name of registrant as specified in its charter)
  
  
   
          DELAWARE                 000-24339                   94-3238130
  (State of incorporation)   (Commission File Number)      (IRS Employer 
                                                            Identification No.)
  
  
   
          1900 S. NORFOLK STREET, SUITE 310, SAN MATEO, CALIFORNIA 94403
   
              (Address of principal executive offices of Registrant)
  
   
                                  (650) 653-2800
               (Registrant's telephone number, including area code)
  
  ================================================================================
  <PAGE>
   
  Item 5.    Other Events
             ------------
  
  
       On December 29, 1998, Inktomi Corporation announced that its Board of
  Directors approved a two-for-one stock split of its common stock ("Common
  Stock").  Stockholders of record on January 12, 1999 will be issued a
  certificate representing one additional share of Common Stock for each share of
  Common Stock held on January 12, 1999.  The payment date for this stock dividend
  will be on or about January 27, 1999.
  
  
  
  Item 7.    Financial Statements and Exhibits
             ---------------------------------
  
  
            (c)    Exhibits
  
  
                   99.1   Press Release dated December 29, 1998 regarding the
  stock split
  
                                        -2-
  <PAGE>
   
                                    SIGNATURES
  
  
       Pursuant to the requirements of the Securities Exchange Act of 1934, as
  amended, the registrant has duly caused this report to be signed on its behalf
  by the undersigned hereunto duly authorized.
  
  
                                      INKTOMI CORPORATION
  
  
  Dated:  December 29, 1998           By:  /S/ DAVID C. PETERSCHMIDT
                                           -------------------------------------
                                           David C. Peterschmidt, President and
                                           Chief Executive Officer
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text: ================================================================================
  
                        SECURITIES AND EXCHANGE COMMISSION
  
                              WASHINGTON, D.C.  20549
  
                                     FORM 8-K
                                  CURRENT REPORT
  
                        Pursuant to Section 13 or 15(d) of
                        the Securities Exchange Act of 1934
  
       Date of Report (Date of earliest event reported):  December 29, 1998
  
   
                                INKTOMI CORPORATION
  
              (Exact name of registrant as specified in its charter)
  
   
          DELAWARE                 000-24339                   94-3238130
  (State of incorporation)   (Commission File Number)      (IRS Employer 
                                                            Identification No.)
  
   
          1900 S. NORFOLK STREET, SUITE 310, SAN MATEO, CALIFORNIA 94403
   
              (Address of principal executive offices of Registrant)
  
   
                                  (650) 653-2800
               (Registrant's telephone number, including area code)
  
  ================================================================================
  Item 5.    Other Events
             ------------
  
       On December 29, 1998, Inktomi Corporation announced that its Board of
  Directors approved a two-for-one stock split of its common stock ("Common
  Stock").  Stockholders of record on January 12, 1999 will be issued a
  certificate representing one additional share of Common Stock for each share of
  Common Stock held on January 12, 1999.  The payment date for this stock dividend
  will be on or about January 27, 1999.
  
  Item 7.    Financial Statements and Exhibits
             ---------------------------------
  
            (c)    Exhibits
  
                   99.1   Press Release dated December 29, 1998 regarding the
  stock split
  
                                        -2-
  SIGNATURES
  
       Pursuant to the requirements of the Securities Exchange Act of 1934, as
  amended, the registrant has duly caused this report to be signed on its behalf
  by the undersigned hereunto duly authorized.
  
                                      INKTOMI CORPORATION
  
  Dated:  December 29, 1998           By:  /S/ DAVID C. PETERSCHMIDT
                                           -------------------------------------
                                           David C. Peterschmidt, President and
                                           Chief Executive Officer